Properties of the Number 90022

Ninety Thousand Twenty-Two

Basics

Value: 90021 → 90022 → 90023

Parity: even

Prime: No

Previous Prime: 90019

Next Prime: 90023

Digit Sum: 13

Digital Root: 4

Palindrome: No

Factorization: 2 × 19 × 23 × 103

Divisors: 1, 2, 19, 23, 38, 46, 103, 206, 437, 874

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 10101111110100110

Octal: 257646

Duodecimal: 4411A

Hexadecimal: 15fa6

Square: 8103960484

Square Root: 300.03666442619976

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

Cupolar numbers: a(n) = (n+1)*(5·n² + 7·n + 3)/3. A96000

Value of A121805(k) for k = A367358(n). A367359

a(n) = binomial(n+3, 4) + binomial(n+1, 3) + 1. A368881

Decimal expansion of the prime ζ function at 2: ∑_{p prime} 1/p². A85548

Triangle of numbers T(n,k) = number of permutations of (1,2,...,n) with longest increasing subsequence of length k (1<=k<=n). A47874

Number of distinct lines through the origin in the n-dimensional lattice of side length 6. A90022

Triangle read by rows: T(n,k) is the number of permutations of n elements with k the (smallest) header (first element) of the longest descending subsequence. A224652

From descending subsequences of permutations. A6219

From descending subsequences of permutations. A6220