Properties of the Number 21064

Twenty-One Thousand Sixty-Four

Basics

Value: 21063 → 21064 → 21065

Parity: even

Prime: No

Previous Prime: 21061

Next Prime: 21067

Digit Sum: 13

Digital Root: 4

Palindrome: No

Factorization: 2 ³ × 2633

Divisors: 1, 2, 4, 8, 2633, 5266, 10532, 21064

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 101001001001000

Octal: 51110

Duodecimal: 10234

Hexadecimal: 5248

Square: 443692096

Square Root: 145.13442045221387

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

Number of integer partitions of n > 0 such that the least and greatest parts are not both odd (equivalently, their product is even). A391230

Number of (w,x,y) with all terms in {0,...,n} and |w-x| + |x-y| ≠ w+x+y. A213480

p-INVERT of (1,1,1,1,1,...), where p(S) = (1 - 2 S²)². A291024

Denominators of continued fraction convergents to sqrt(344). A41651

G.f.: A(x) = ∑_n>=0 2ⁿ*log(G(2ⁿ*x))ⁿ/n! where G(x) = g.f. of A167000. A167002

Sum of binary palindromes p < 2ⁿ. A206918

Irregular table read by rows: The number of k-faced polyhedra, where k >= 4, formed when a row of n adjacent cubes are internally cut by all the planes defined by any three of their vertices. A347918

Number of 2n-bead balanced binary strings, rotationally equivalent to reverse, inequivalent to complement and reversed complement. A45658

A050030(2ⁿ+1). A105996

Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 195", based on the 5-celled von Neumann neighborhood. A270691