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Properties of the Number 20529

Twenty Thousand Five Hundred Twenty-Nine

Basics

Value: 20528 → 20529 → 20530

Parity: odd

Prime: No

Previous Prime: 20521

Next Prime: 20533

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 3 2 × 2281

Divisors: 1, 3, 9, 2281, 6843, 20529

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 101000000110001

Octal: 50061

Duodecimal: BA69

Hexadecimal: 5031

Square: 421439841

Square Root: 143.27944723511465

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

Number of semi-sums of strict integer partitions of n. A366741
Numbers of the form HMMSS with primes H < 24 and MM, SS < 60, for which the number of seconds after midnight, 3600·H+60·MM+SS, is also prime. A295011
Number of partitions p of n such that (maximal multiplicity of the parts of p) < (maximal part of p). A240310
Sum over all partitions of n of the product of the number of parts and the number of distinct parts. A339011
T(n,k)=Number of (n+2)X(k+2) 0..2 arrays with every 2X2 subblock sum equal to some diagonal or antidiagonal neighbor 2X2 subblock sum. A187283
Number of (n+2) X 3 0..2 arrays with every 2 X 2 subblock sum equal to some diagonal or antidiagonal neighbor 2 X 2 subblock sum. A187280
Number of n X 2 0..2 arrays with horizontal differences mod 3 never 1, vertical differences mod 3 never -1, and rows and columns lexicographically nondecreasing. A229439
Number of (n+2)X5 0..2 arrays with every 2X2 subblock sum equal to some diagonal or antidiagonal neighbor 2X2 subblock sum. A187282
Number of ways of placing n labeled balls into 9 indistinguishable boxes; word structures of length n using a 9-ary alphabet. A164863
4th Bernoulli polynomial evaluated at powers of 2 (multiplied by 30). A20529