Properties of the Number -32128

Thirty-Two Thousand One Hundred Twenty-Eight

Basics

Value: -32129 → -32128 → -32127

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 2 ⁷ × 251

Divisors: 1, 2, 4, 8, 16, 32, 64, 128, 251, 502

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

5184 Try Today's Challenge

Representations

Binary: -111110110000000

Octal: -76600

Duodecimal: -16714

Hexadecimal: -7d80

Square: 1032208384

Square Root: 179.24285201926463

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 whose abundance is 4: σ(k) - 2·k = 4. A88832

Abundant numbers n for which the abundance d = σ(n) - 2·n is a proper divisor, that is, 0 < d < n and d | n. A181595

Numbers k such that σ(k) == 4 (mod k). A45769

Numbers k such that σ(k) == 0 (mod k+2). A67702

Abundant numbers n such that n/(σ(n)-2n) is an integer. A153501

Even and odd solutions to abs(σ(x)-2x) <= log(x). Numbers n whose abundance-radius does not exceed log(n). A88011

Near-perfect numbers (A181595) of the form 2^t-1*(2^t-2^k-1), where 2^t-2^k-1 is prime, k>=1, t>k. A181701

Two-column table read by rows: Primitive distinct pairs that have the same value of φ, σ, and τ. A322688

a(n) is the concatenation of n and 4n. A19552

Number of ways to place 2 non-attacking wazirs on an n X n toroidal board. A201236