Properties of the Number 90012

Ninety Thousand Twelve

Basics

Value: 90011 → 90012 → 90013

Parity: even

Prime: No

Previous Prime: 90011

Next Prime: 90017

Digit Sum: 12

Digital Root: 3

Palindrome: No

Factorization: 2 ² × 3 × 13 × 577

Divisors: 1, 2, 3, 4, 6, 12, 13, 26, 39, 52

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10101111110011100

Octal: 257634

Duodecimal: 44110

Hexadecimal: 15f9c

Square: 8102160144

Square Root: 300.01999933337777

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 2·3^k - 1 is prime. A3307

a(n) = 144·n² + 12. A158546

Number of Hamiltonian cycles in O₅ X P_n. A3743

Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 50. A31728

Number of binary strings of length n with no substrings equal to 0000 or 0101. A164389

Number of 3 X n 0..2 arrays with diagonals and antidiagonals unimodal and rows nondecreasing. A224354

Number of orthogonal rectangles with vertices on an n X n square grid of points but with no vertices on the grid's diagonals. A285956

Numbers n such that A = n - digitsum(n) is divisible by the largest power of 10 <= A. A242474

Refactorable numbers: number of divisors of k divides k. Also known as τ numbers. A33950

a(n) = 4·a(n-2) - a(n-4) for n > 1, a(n) = n for n = 0, 1. A2530