Properties of the Number 28077

Twenty-Eight Thousand Seventy-Seven

Basics

Value: 28076 → 28077 → 28078

Parity: odd

Prime: No

Previous Prime: 28069

Next Prime: 28081

Digit Sum: 24

Digital Root: 6

Palindrome: No

Factorization: 3 × 7 ² × 191

Divisors: 1, 3, 7, 21, 49, 147, 191, 573, 1337, 4011

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 110110110101101

Octal: 66655

Duodecimal: 142B9

Hexadecimal: 6dad

Square: 788317929

Square Root: 167.56192885020153

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

Numbers k such that σ(φ(k)) - φ(σ(k)) is nonzero and divisible by σ(k), that is A065395(k)/A000203(k) is a nonzero integer. A92588

Total number of parts coprime to n in the partitions of n into 7 parts. A363325

Antidiagonal sums of square array A082025. A82190

Number of stable towers of 2 X 2 LEGO blocks. A7575

Indices of products of twin primes in the semiprimes. A131188

Number of diamond-free Berge perfect graphs on n nodes. A123420

Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 1100-0100-1111 pattern in any orientation. A146651

Hash Parker numbers: Integers whose real 32nd root's first six nonzero digits (after the decimal point) rearranged in ascending order are equal to 234477. A309979

Positions of 0 in A285177; complement of A285402. A285401

Positions of 0 in A285411; complement of A285413. A285412