Properties of the Number 21632

Twenty-One Thousand Six Hundred Thirty-Two

Basics

Value: 21631 → 21632 → 21633

Parity: even

Prime: No

Previous Prime: 21617

Next Prime: 21647

Digit Sum: 14

Digital Root: 5

Palindrome: No

Factorization: 2 ⁷ × 13 ²

Divisors: 1, 2, 4, 8, 13, 16, 26, 32, 52, 64

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 101010010000000

Octal: 52200

Duodecimal: 10628

Hexadecimal: 5480

Square: 467943424

Square Root: 147.07821048680188

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 of the form (2ⁱ)*(13^j). A107326

Sum of the lengths of the cycle types of the permutation created by length sorting on the partitions of n. A36056

T(n,k)=Number of (n+2)X(k+2) 0..1 arrays with every 3X3 subblock having equal diagonal elements or equal antidiagonal elements, and new values 0..1 introduced in row major order. A203923

Numbers with prime signature {7,2}, i.e., of form p⁷*q² with p and q distinct primes. A179689

T(n,k)=Number of nXk 0..2 arrays with new values 0..2 introduced in row major order and no element equal to more than one of its immediate leftward or upward or left-upward diagonal neighbors. A208567

Expansion of 1/(1 - 2·x² - 2·x³). A52907

a(n) = 32·n². A244082

Powers of 2 written in base 60, concatenating the decimal values of the sexagesimal digits. A250073

Numbers m such that the GCD of the x's that satisfy σ(x) = m is 3. A241648

Numbers whose prime factors are 2 and 13. A288162