Properties of the Number 20967

Twenty Thousand Nine Hundred Sixty-Seven

Basics

Value: 20966 → 20967 → 20968

Parity: odd

Prime: No

Previous Prime: 20963

Next Prime: 20981

Digit Sum: 24

Digital Root: 6

Palindrome: No

Factorization: 3 × 29 × 241

Divisors: 1, 3, 29, 87, 241, 723, 6989, 20967

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 101000111100111

Octal: 50747

Duodecimal: 10173

Hexadecimal: 51e7

Square: 439615089

Square Root: 144.79986187838716

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

Numbers k such that A(k+1) = A(k) + 1, where A() = A005101() are the abundant numbers. A169822

Expansion of φ(-x⁶) / f(-x) in powers of·where φ(), f() are Ramanujan θ functions. A271661

Numbers k such that k and 5·k, taken together, are pandigital. A115925

a(n) = 25·n² - 2·n. A154376

Coefficient of xⁿ in the expansion of ( (1+x+x³)³ / (1+x) )ⁿ. A372372

Numbers k such that σ(σ(k)-k) = φ(k). A74875

a(n) = floor( (4 + sqrt(11))ⁿ ). A279269

a(n) = ∑_{k >=1} floor(n·sqrt(2)^3-k). A20967