Properties of the Number 28561

Twenty-Eight Thousand Five Hundred Sixty-One

Basics

Value: 28560 → 28561 → 28562

Parity: odd

Prime: No

Previous Prime: 28559

Next Prime: 28571

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 13 ⁴

Divisors: 1, 13, 169, 2197, 28561

Polygonal

Triangular: No

Square: Yes

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110111110010001

Octal: 67621

Duodecimal: 14641

Hexadecimal: 6f91

Square: 815730721

Square Root: 169

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

Fourth powers: a(n) = n⁴. A583

a(n) = prime(n)⁴. A30514

Numbers whose sum of divisors is prime. A23194

Powers of 13: a(n) = 13ⁿ. A1022

a(n) = A276086(A108951(n)). A324886

4-full numbers: if a prime p divides k then so does p⁴. A36967

Squares of Pell numbers. A79291

a(n) = (6·n + 1)². A16922

a(n) = (4·n + 1)². A16814

Powers of 13 which have no zero in their decimal expansion. A195945