Properties of the Number -38

Thirty-Eight

Basics

Value: -39 → -38 → -37

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 11

Digital Root: 2

Palindrome: No

Factorization: 2 × 19

Divisors: 1, 2, 19, 38

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: -100110

Octal: -46

Duodecimal: -32

Hexadecimal: -26

Square: 1444

Square Root: 6.164414002968976

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

The sequence 2^1-n*a(n) is fixed (up to signs) by Stirling2 transform. A3633

Abundance of n, or (sum of divisors of n) - 2n. A33880

a(n) = 2 - n. A22958

Dirichlet inverse of σ function (A000203). A46692

Expansion of reciprocal of Hauptmodul for Gamma₀(18). A92848

a(n) = (-1)ⁿ⁺¹ * n. A181983

Expansion of square root of q times normalized Hauptmodul for γ(4) in powers of q⁸. A29838

Replace 2^k with (-2)^k in binary expansion of n. A53985

Expansion of q^-1/24 (m (1-m) / 16)^1/24 in powers of q, where m = k² is the parameter and q is the nome for Jacobian elliptic functions. A81360

Expansion of ψ(x) / φ(x) in powers of·where φ(), ψ() are Ramanujan θ functions. A83365