Properties of the Number 20355

Twenty Thousand Three Hundred Fifty-Five

Basics

Value: 20354 → 20355 → 20356

Parity: odd

Prime: No

Previous Prime: 20353

Next Prime: 20357

Digit Sum: 15

Digital Root: 6

Palindrome: No

Factorization: 3 × 5 × 23 × 59

Divisors: 1, 3, 5, 15, 23, 59, 69, 115, 177, 295

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2730 Try Today's Challenge

Representations

Binary: 100111110000011

Octal: 47603

Duodecimal: B943

Hexadecimal: 4f83

Square: 414326025

Square Root: 142.67095009146047

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

Integers that are Rhonda numbers to base 16. A100975

Number of inequivalent ways (mod D₄) three checkers can be placed on an n X n board. A82966

Triangle formed when the cumulative boustrophedon transform is applied to 1, 1, 1, 1, ..., read by rows from left to right. A59433

Triangle formed when cumulative boustrophedon transform is applied to 1, 1, 1, 1, ..., read by rows in natural order. A59434

Cumulative boustrophedon transform of 1, 1, 1, 1, ... A59430

Triangle T(n,k) read by rows given by [2,1,2,1,2,1,2,1,2,1,2,1,...] δ [1,0,0,0,0,0,0,0,...] where δ is the operator defined in A084938 . A133367

a(n) = Sum{a(k): k=0,1,2,...,n-4,n-2,n-1}; a(n-3) is not a summand; initial terms are 0,3,4. A49863

Expansion of e.g.f. exp(-∑_k>=1 prime(k)*x^k/k!). A300661

First occurrence of n in A334144. A333959

Numbers with five neighboring primes on the hexagonal spiral board of odd numbers. A345654