Properties of the Number 20962

Twenty Thousand Nine Hundred Sixty-Two

Basics

Value: 20961 → 20962 → 20963

Parity: even

Prime: No

Previous Prime: 20959

Next Prime: 20963

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 2 × 47 × 223

Divisors: 1, 2, 47, 94, 223, 446, 10481, 20962

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 101000111100010

Octal: 50742

Duodecimal: 1016A

Hexadecimal: 51e2

Square: 439405444

Square Root: 144.78259563911678

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 non Wilf and non conjugate Wilf integer partitions of n. A383530

Numbers that are the sum of eight fourth powers in exactly eight ways. A345840

Prime sieve of π. A245770

Number of partitions p of n such that floor(mean(p)) is a part and ceiling(mean(p)) is not. A241342

a(n) = 529·n² - 746·n + 263. A156842

Numbers whose second arithmetic derivative (A068346) is a primorial number (A002110) > 1. A368702

Number of base-3 "Punctual Birds" with n base-3 digits. A132135

Expansion of ∏_k>=0 (1+x^3·k+1)⁴. A261637

Number of walks within N³ (the first octant of Z³) starting at (0,0,0) and consisting of n steps taken from {(-1, 0, 0), (-1, 0, 1), (0, 1, 0), (1, -1, 0), (1, 1, -1)}. A148305

a(n) = ∑_{k >= 1} floor((1+sqrt(2))^n-k). A20962