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Properties of the Number -22130

Twenty-Two Thousand One Hundred Thirty

Basics

Value: -22131 → -22130 → -22129

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 8

Digital Root: 8

Palindrome: No

Factorization: 2 × 5 × 2213

Divisors: 1, 2, 5, 10, 2213, 4426, 11065, 22130

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -101011001110010

Octal: -53162

Duodecimal: -10982

Hexadecimal: -5672

Square: 489736900

Square Root: 148.7615541731129

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

Numbers such that the digital sum base 2 and the digital sum base 3 and the digital sum base 10 all are equal. A135120
Expansion of ∏k>=1 ((1+xk) / ((1-x2·k-1) * (1-x8·k-4))). A280908
a(n) = A068346(A276086(n)), where A068346 is the second arithmetic derivative, and A276086 is the primorial base exp-function. A370131
Numbers that cannot be expressed as the sum of one or more numbers without any repeated digits. A342080
a(n) is the integer part of the area of a regular n-gon whose side lengths are n. A374296
a(n) = a(1) + a(2) + ... + a(n-1) + a(m) for n >= 4, where m = n - 1 - 2p and p is the unique integer such that 2p < n - 1 <= 2p+1, with a(1) = 1, a(2) = 2, and a(3) = 1. A49950
Let m(k) be the index of the largest triangular number <= k; then a(n) is the smallest number k that can be written as the sum of three triangular numbers if the largest is the (m(k)-n)-th triangular number, but no larger. A331753