Properties of the Number 28877

Twenty-Eight Thousand Eight Hundred Seventy-Seven

Basics

Value: 28876 → 28877 → 28878

Parity: odd

Prime: No

Previous Prime: 28871

Next Prime: 28879

Digit Sum: 32

Digital Root: 5

Palindrome: No

Factorization: 67 × 431

Divisors: 1, 67, 431, 28877

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 111000011001101

Octal: 70315

Duodecimal: 14865

Hexadecimal: 70cd

Square: 833881129

Square Root: 169.93233947662816

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: No

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: No

Kaprekar Number: No

Catalan Number: No

Vampire Number: No

Taxicab Number: No

Super Prime: No

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with the maximum plus the upper median minus the lower median of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one. A237730

T(n,k)=Number of (n+2)X(k+2) 0..3 arrays with every 3X3 subblock row and column sum equal to 0 2 5 6 or 7 and every 3X3 diagonal and antidiagonal sum not equal to 0 2 5 6 or 7. A252514

Numbers k with the property that it is possible to write the base 2 expansion of k as concat(a₂,b₂), with a₂>0 and b₂>0 such that, converting a₂ and b₂ to base 10 as a and b, we have σ(a) + σ (b) = σ(k) - k. A258813

Number of "nonlinear" trees on n nodes. A316321

a(n) is the least odd composite number m such that nextprime(p·m) > p·nextprime(m) where p is the n-th prime. A117103

Number of binary strings of length n with no substrings equal to 0010 or 1100. A164405

Number of (n+1)X(1+1) 0..2 arrays with the maximum plus the upper median minus the lower median of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one. A237723

Number of (n+1)X(5+1) 0..2 arrays with the maximum plus the upper median minus the lower median of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one. A237727

Number of (n+2) X (3+2) 0..3 arrays with every 3 X 3 subblock row and column sum equal to 0 2 5 6 or 7 and every 3 X 3 diagonal and antidiagonal sum not equal to 0 2 5 6 or 7. A252509

Number of (n+2)X(4+2) 0..3 arrays with every 3X3 subblock row and column sum equal to 0 2 5 6 or 7 and every 3X3 diagonal and antidiagonal sum not equal to 0 2 5 6 or 7. A252510