Properties of the Number 22990

Twenty-Two Thousand Nine Hundred Ninety

Basics

Value: 22989 → 22990 → 22991

Parity: even

Prime: No

Previous Prime: 22973

Next Prime: 22993

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 2 × 5 × 11 ² × 19

Divisors: 1, 2, 5, 10, 11, 19, 22, 38, 55, 95

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 101100111001110

Octal: 54716

Duodecimal: 1137A

Hexadecimal: 59ce

Square: 528540100

Square Root: 151.62453627299243

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) = a(n-1) + a(n-6), with a(i) = 1 for i = 0..5. A5708

a(n) = ∑_d∣n σ(n/d)*d³. A27847

a(n) = n*(n+1)*(n² + 2)/6. A71239

a(n) = ∑_d∣n d³*A000593(n/d). A288419

G.f.: ∏_m>0 (1+x^m+2!*x^2·m). A293204

Expansion of 1/(1 - x⁶ - x⁷ - x⁸ - ...). A17900

a(n) = n*(n+1)*(20·n-17)/6. A172117

Number of compositions of 6·n-5 into parts 1 and 6. A373960

Number of real singularities on a family of degree-3n algebraic surfaces. A200048

G.f. A(x) satisfies: A(x) = x + x² * exp(3 * ∑_k>=1 (-1)^k+1 * A(x^k) / k). A345244