Properties of the Number 21902

Twenty-One Thousand Nine Hundred Two

Basics

Value: 21901 → 21902 → 21903

Parity: even

Prime: No

Previous Prime: 21893

Next Prime: 21911

Digit Sum: 14

Digital Root: 5

Palindrome: No

Factorization: 2 × 47 × 233

Divisors: 1, 2, 47, 94, 233, 466, 10951, 21902

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 101010110001110

Octal: 52616

Duodecimal: 10812

Hexadecimal: 558e

Square: 479697604

Square Root: 147.99324308900052

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

Expansion of ∏_k>=0 1/(1-x^4·k+1)⁴. A261636

Expansion of 1/(1-x⁵-x⁶-x⁷-x⁸-x⁹-x¹⁰-x¹¹-x¹²-x¹³-x¹⁴). A17845

The first entry of the vector v[n]=Mv[n-1], where M is the 6 X 6 matrix [[0, 1, 0, 0, 0, 0], [0, 0, 1, 0, 0, 0], [0, 0, 0, 1, 0, 0], [0, 0, 0, 0, 1, 0], [0, 0, 0, 0, 0, 1], [1, 5, 10, 10, 5, 1]] and v[0] is the column vector [0, 1, 1, 2, 3, 5]. A114725

Numbers n for which A222085(n)=A222085(n+1). A222088

a(n)/A002939(n+1) is the Kirchhoff index of the disjoint union of two complete graphs each on n and n+1 vertices with the empty graph on n+1 vertices. A338588

Numbers k such that 85·10^k+1 is prime. A376910

Number of walks within N³ (the first octant of Z³) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, -1), (-1, -1, 1), (-1, 0, 1), (1, -1, 0), (1, 1, 0)}. A149140

Number of walks within N³ (the first octant of Z³) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, 1), (-1, 1, -1), (0, 0, 1), (1, 0, -1), (1, 1, 0)}. A150192

Numerators of continued fraction convergents to sqrt(876). A42692

Denominators of continued fraction convergents to sqrt(876). A42693