Properties of the Number 21923

Twenty-One Thousand Nine Hundred Twenty-Three

Basics

Value: 21922 → 21923 → 21924

Parity: odd

Prime: No

Previous Prime: 21911

Next Prime: 21929

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 11 × 1993

Divisors: 1, 11, 1993, 21923

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 101010110100011

Octal: 52643

Duodecimal: 1082B

Hexadecimal: 55a3

Square: 480617929

Square Root: 148.06417527545278

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

a(n) = n³ - n - 1. A126420

Number of polyiamonds with 2n cells that tile the plane by translation. A75216

Greater of a,b where n² = a³ + b³; a,b>0 and gcd(a,b)=1. The lesser of a,b is the corresponding term in A099532 and n, which is used to order this sequence, is the corresponding term in A099426. A99533

Number of partitions of n such that the number of parts or the number of distinct parts is a part. A241381

Greater value of a coprime pair (x,y) satisfying x³+y³=z². A282639

Expansion of 1/(1-x⁵-x⁶-x⁷-x⁸-x⁹-x¹⁰-x¹¹). A17842

Number of partitions of n into parts that contain primes to odd powers only (A002035). A290369

Decimal expansion of 1/919. A21923

Number of nX6 0..1 arrays with rows, antidiagonals and columns unimodal. A223635