Properties of the Number -81922

Eighty-One Thousand Nine Hundred Twenty-Two

Basics

Value: -81923 → -81922 → -81921

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 2 × 40961

Divisors: 1, 2, 40961, 81922

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

8109 Try Today's Challenge

Representations

Binary: -10100000000000010

Octal: -240002

Duodecimal: -3B4AA

Hexadecimal: -14002

Square: 6711214084

Square Root: 286.22019495486336

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 n such that m + (sum of digits in base-4 representation of m) = n has exactly three solutions. A230635

A monotonic doubly-fractal sequence. Erase the last (rightmost) digit of every integer: what is left is the sequence itself. The erased digits, one by one, form also the sequence itself. A127204

Number of partitions of 2n prime to 3,5 with all odd parts occurring with even multiplicities. There is no restriction on the even parts. A103259

Numbers k such that the total number of consecutive runs of zeros of length m in every binary expansion from 1 to k, is even, for all m ≠ floor(log₂(k)). A360320

a(n) = ∑_k=0..n 3^n-k*C(2·n,n-k). A386826