Properties of the Number -331520

Three Hundred Thirty-One Thousand Five Hundred Twenty

Basics

Value: -331521 → -331520 → -331519

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 14

Digital Root: 5

Palindrome: No

Factorization: 2 ⁸ × 5 × 7 × 37

Divisors: 1, 2, 4, 5, 7, 8, 10, 14, 16, 20

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -1010000111100000000

Octal: -1207400

Duodecimal: -13BA28

Hexadecimal: -50f00

Square: 109905510400

Square Root: 575.7777348942906

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 j such that σ(σ(j)) = k·j for some k. A19278

Let sigma_m (n) be result of applying sum-of-divisors function m times to n; call n (m,k)-perfect if sigma_m (n) = k·n; sequence gives the (2,9)-perfect numbers. A19286

Sheffer triangle S2[4,1] = (exp(x), exp(4·x) - 1). A285061

Number of non-unitary square divisors of n!. A375188

Specific heat coefficients for square lattice spin 2 Ising model. A10112

Numerators of e.g.f.: -cot(arctanh(x)), odd powers only. A102064

Subsequence of terms of A019278 whose sum of divisors is also a term of A019278. A292949

Triangle: r=23;l=7;m(r,l,n)=(r - l)*IdentityMatrix[n] + l·Table[1, {i, 1, n}, {j, 1, n}]. A157981

Numbers n such that denominator(σ(σ(n))/n) = denominator(σ(σ(s))/s) where s = σ(n). A275321