Properties of the Number -128985

One Hundred Twenty-Eight Thousand Nine Hundred Eighty-Five

Basics

Value: -128986 → -128985 → -128984

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 33

Digital Root: 6

Palindrome: No

Factorization: 3 × 5 × 8599

Divisors: 1, 3, 5, 15, 8599, 25797, 42995, 128985

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

5184 Try Today's Challenge

Representations

Binary: -11111011111011001

Octal: -373731

Duodecimal: -62789

Hexadecimal: -1f7d9

Square: 16637130225

Square Root: 359.14481758755755

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

T(n,k)=Number of nXk arrays of the minimum value of corresponding elements and their horizontal, vertical or antidiagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and columns, 0..3 nXk array. A220931

a(n) = 63·2ⁿ - 39 (n>=1). A304509

Number of permutations of length n which avoid the patterns 1342, 3214, 4213. A116768

Number of nX3 arrays of the minimum value of corresponding elements and their horizontal, vertical or antidiagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and columns, 0..3 nX3 array. A220927