Properties of the Number 22160

Twenty-Two Thousand One Hundred Sixty

Basics

Value: 22159 → 22160 → 22161

Parity: even

Prime: No

Previous Prime: 22159

Next Prime: 22171

Digit Sum: 11

Digital Root: 2

Palindrome: No

Factorization: 2 ⁴ × 5 × 277

Divisors: 1, 2, 4, 5, 8, 10, 16, 20, 40, 80

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 101011010010000

Octal: 53220

Duodecimal: 109A8

Hexadecimal: 5690

Square: 491065600

Square Root: 148.86235252742716

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) = 2·n*(7·n - 3). A316466

E.g.f. arctan(sec(x)*sinh(x)) (odd powers only). A12816

a(n) = ∑_k=0..n A109613(k)*A005843(n-k). A171218

The number of binary pattern classes in the (2,n)-rectangular grid with 3 '1's and (2n-3) '0's: two patterns are in same class if one of them can be obtained by a reflection or 180-degree rotation of the other. A225972

Triangle read by rows: T(n, k) = (-8)^k*binomial(2·n, 2·k)*Euler(2·k, 1/2). A371637

Binomial transform of number triangle A105632. A105848

First occurrence of difference n between two consecutive terms of A000404. a(n) gives the lower term. The upper term is A355238. A355237

Conjectured lower bounds for the Riemann hypothesis function floor(H(k) + exp(H(k))*log(H(k))) - σ(k). A222761

Expansion of log(1+sin(x)/cosh(x)). A9342

a(n) = A057641(A094348(n)). A181852