Properties of the Number -223938

Two Hundred Twenty-Three Thousand Nine Hundred Thirty-Eight

Basics

Value: -223939 → -223938 → -223937

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 2 × 3 ³ × 11 × 13 × 29

Divisors: 1, 2, 3, 6, 9, 11, 13, 18, 22, 26

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -110110101011000010

Octal: -665302

Duodecimal: -A9716

Hexadecimal: -36ac2

Square: 50148227844

Square Root: 473.22087866027215

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 σ(k) = ψ(k) + φ(k). A389478

a(n) = (n + 1)*(n + 2)*(n + 4)*(n + 8)*(n + 15)/120. A6636

Numbers n such that σ(n) = 10*φ(n) (where σ=A000203, φ=A000010). A171256

Numbers k such that φ(k) = σ(core(k)) where φ(k) is the Euler totient function, σ(k) the sum of divisors of k and core(k) the squarefree part of k (the smallest integer such that k·core(k) is a square). A69552