Properties of the Number -18360

Eighteen Thousand Three Hundred Sixty

Basics

Value: -18361 → -18360 → -18359

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 2 ³ × 3 ³ × 5 × 17

Divisors: 1, 2, 3, 4, 5, 6, 8, 9, 10, 12

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

7925 Try Today's Challenge

Representations

Binary: -100011110111000

Octal: -43670

Duodecimal: -A760

Hexadecimal: -47b8

Square: 337089600

Square Root: 135.49907748763457

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

a(n) = n*(n+1)*(n+2)*(n+3)/4. A33487

Triangular array read by rows: T(n, k) = binomial(n, k) * A000129(n - k) for 0 <= k < n. A367211

Number of 3 X n (0,1) matrices such that each row and each column is nondecreasing or nonincreasing. A86113

A generalization of triangle A071951 (Legendre-Stirling). A89504

Triangle read by rows: T(n,h) = number of functions f:{1,2,...,n}->{1,2,...,n} such that |Image(f)|=h; h=1,2,...,n, n=1,2,3,... . Essentially A090657, but without zeros. A101817

a(n) = binomial(2·n, n) mod ((n+1)*(n+2)*(n+3)*(n+4)). A65346

Magic sums of 4 X 4 magic squares composed of squares. A271580

Numbers k such that σ(k) divides k². A90777

Numbers with prime factorization p·q*r³*s³ (where p, q, r, s are distinct primes). A190108

Numbers k for which A306927(k) [= A001615(k)-k] is a multiple of A344705(k) [= A001615(k)-A001065(k)], and their quotient is nonnegative. A344700