Properties of the Number -163185

One Hundred Sixty-Three Thousand One Hundred Eighty-Five

Basics

Value: -163186 → -163185 → -163184

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 24

Digital Root: 6

Palindrome: No

Factorization: 3 × 5 × 11 × 23 × 43

Divisors: 1, 3, 5, 11, 15, 23, 33, 43, 55, 69

Polygonal

Triangular: No

Square: No

Pentagonal: Yes

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -100111110101110001

Octal: -476561

Duodecimal: -7A529

Hexadecimal: -27d71

Square: 26629344225

Square Root: 403.9616318414411

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

Binomial coefficients C(2·n+4,4). A53134

Doubly pentagonal numbers: a(n) = n*(3·n-2)*(3·n-1)*(3·n+1)/8. A232713

a(n) = lcm(n, n+1, n+2, n+3)/12. A67047

List of numbers that are both pentagonal (A000326) and binomial coefficients C(n,4) (A000332). A145920

a(n) = A322227(n) / (n*(n+1)/2), where A322227(n) = [x^n-1] ∏_k=1..n (k + x - k·x²), for n >= 1. A322226

Binomial coefficient C(n,42). A10995

Binomial coefficient C(46,n). A10962

a(n) = binomial(prime(n+1)-1, prime(n)-1). A261726

a(n) = (n⁴ - 10·n² + 15·n - 6)/2. A135916