Properties of the Number 28116

Twenty-Eight Thousand One Hundred Sixteen

Basics

Value: 28115 → 28116 → 28117

Parity: even

Prime: No

Previous Prime: 28111

Next Prime: 28123

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 2 ² × 3 ² × 11 × 71

Divisors: 1, 2, 3, 4, 6, 9, 11, 12, 18, 22

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 110110111010100

Octal: 66724

Duodecimal: 14330

Hexadecimal: 6dd4

Square: 790509456

Square Root: 167.67826334978545

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 nXk arrays of the minimum value of corresponding elements and their horizontal or antidiagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..2 nXk array. A219852

Numbers k such that 2^k - 23 is prime. A57220

Numbers k such that sopfr(k) = sopfr(k + sopfr(k)). A50780

Eleven times hexagonal numbers: a(n) = 11·n*(2·n-1). A154617

Nonnegative values·of solutions (x, y) to the Diophantine equation x² + (x+497)² = y². A207077

G.f. satisfies: A(x) = x + A(A(x))² + A(A(x))³. A211794

Expansion of ∏_m>=1 (1+m·q^m)^-12. A22704

Number of nX4 arrays of the minimum value of corresponding elements and their horizontal or antidiagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..2 nX4 array. A219848

(Denominators of Cauchy numbers of the second kind hat c_2n)/6. A222561

Total number of parts in all compositions of n with at least two parts in increasing order. A229935