Properties of the Number 90238

Ninety Thousand Two Hundred Thirty-Eight

Basics

Value: 90237 → 90238 → 90239

Parity: even

Prime: No

Previous Prime: 90227

Next Prime: 90239

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 2 × 45119

Divisors: 1, 2, 45119, 90238

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10110000001111110

Octal: 260176

Duodecimal: 4427A

Hexadecimal: 1607e

Square: 8142896644

Square Root: 300.39640477209446

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) = ∑_m=1..n ∑_k=1..m C(2·k,k), where C(2·k,k) = (2·k)!/(k!)² = A000984(k). A120278

Number of unsensed planar maps with n edges. A6385

Number of sensed planar maps with n edges. A6384

Triangle T(n, k) read by rows. T(n, k) is the number of lists of k unlabeled permutations whose total length is n. A90238

Array read by antidiagonals: A(n,k) is the number of unsensed planar maps with n vertices and k faces, n >= 1, k >= 1. A277741

Number of achiral planar maps with n edges. A6443