Properties of the Number -16730

Sixteen Thousand Seven Hundred Thirty

Basics

Value: -16731 → -16730 → -16729

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 2 × 5 × 7 × 239

Divisors: 1, 2, 5, 7, 10, 14, 35, 70, 239, 478

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -100000101011010

Octal: -40532

Duodecimal: -9822

Hexadecimal: -415a

Square: 279892900

Square Root: 129.34450123604017

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

Weird numbers: abundant (A005101) but not pseudoperfect (A005835). A6037

a(0)=0, a(1)=2 then a(n) = a(n-2) + 2·sqrt(8·a(n-1)² + 8·a(n-1) + 1). A53141

a(n) = ∑_{k divides n} (n/k)^k. A55225

Unitary weird numbers: unitary abundant (A034683) but not unitary pseudoperfect (A293188). A64114

The number of permutations p of {1,...,n} such that |p(i)-p(i+1)| is in {3,4} for all i from 1 to n-1. A174706

Bi-unitary weird numbers: bi-unitary abundant numbers (A292982) that are not bi-unitary pseudoperfect (A292985). A292986

Infinitary weird numbers: infinitary abundant numbers (A129656) that are not infinitary pseudoperfect numbers (A306983). A306984

Numbers k such that N = k⁶ is a twin rank (cf. A002822: 6N +- 1 are twin primes). A326236

T(n,k)=Number of nXk 0..3 arrays with no element equal to one plus the sum of elements to its left or zero plus the sum of the elements above it or zero plus the sum of the elements diagonally to its northwest or zero plus the sum of the elements antidiagonally to its northeast, modulo 4. A240760

a(n) = (2·Pell(n+1) - (1+(-1)ⁿ))/4. A105635