Properties of the Number -21964

Twenty-One Thousand Nine Hundred Sixty-Four

Basics

Value: -21965 → -21964 → -21963

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 2 ² × 17 ² × 19

Divisors: 1, 2, 4, 17, 19, 34, 38, 68, 76, 289

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -101010111001100

Octal: -52714

Duodecimal: -10864

Hexadecimal: -55cc

Square: 482417296

Square Root: 148.2025640803829

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 k such that the concatenation of k with k-8 gives a square. A115435

a(n) = 19·n². A244631

Numbers k such that k concatenated with k-9 gives the product of two numbers which differ by 2. A116095

Number of partitions where the number of 1's and 2's are equal. A174455

a(n) = n²*(n² + 15)/4. A159833

Number of (w,x,y) with all terms in {0,...,n} and w<x+y and x<y. A212980

Numbers n such that n⁴ is a sum of 4th powers of four nonzero integers whose sum is n. A138760

Number of zig-zag paths from top to bottom of a rectangle of width 10 with n rows. A153360

Numbers k such that 97·2^k+1 is prime. A32398

a(n) = (4·n+8)*n². A258617