Properties of the Number -87648

Eighty-Seven Thousand Six Hundred Forty-Eight

Basics

Value: -87649 → -87648 → -87647

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 33

Digital Root: 6

Palindrome: No

Factorization: 2 ⁵ × 3 × 11 × 83

Divisors: 1, 2, 3, 4, 6, 8, 11, 12, 16, 22

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -10101011001100000

Octal: -253140

Duodecimal: -42880

Hexadecimal: -15660

Square: 7682171904

Square Root: 296.0540491194133

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

Number of 7-digit numbers whose sum of digits is n. A278969

Composite numbers k such that φ(k) divides σ(k) - 2·k. A68412

Number of n X n 0..2 arrays with horizontal differences mod 3 never 1, vertical differences mod 3 never -1, rows lexicographically nondecreasing, and columns lexicographically nonincreasing. A229421

Number of n X 6 0..2 arrays with horizontal differences mod 3 never 1, vertical differences mod 3 never -1, rows lexicographically nondecreasing, and columns lexicographically nonincreasing. A229426

a(n) is the number of solid (3D) partitions of n with 2 layers and second layer a plane partition of 2. A378854

Numbers k such that σ(k) = 2·k + 3*φ(k). A392691

a(n) = n*(n + ceiling(2ⁿ/12)). A29929

Coefficients of the derivatives of the Eulerian polynomials (with indexing as in A173018). A142706