Properties of the Number 20894

Twenty Thousand Eight Hundred Ninety-Four

Basics

Value: 20893 → 20894 → 20895

Parity: even

Prime: No

Previous Prime: 20887

Next Prime: 20897

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 2 × 31 × 337

Divisors: 1, 2, 31, 62, 337, 674, 10447, 20894

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 101000110011110

Octal: 50636

Duodecimal: 10112

Hexadecimal: 519e

Square: 436559236

Square Root: 144.54757002454244

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 with a different mean, median, and mode, assuming there is a unique mode. A363725

Expansion of E.g.f. exp(-x)/(1-3x). A180

Expansion of Molien series for 8-dimensional real Clifford group 2¹⁺⁶.Alt₈.2 of genus 3 and order 5160960. A24186

Square array A(n,k), n >= 0, k >= 0, read by antidiagonals, where column k is the expansion of the e.g.f. exp(-x)/(1 - k·x). A320032

Expansion of ∑_k>0 (1/(1 - k·x^k)² - 1). A362683

Triangle read by rows: T(n, k) = n! * 3^k * hypergeom([-k], [-n], -1/3). A375446

Least k >= 6 such that A087666(k) = n. A87710

Number of partitions of n with rank 4 or higher (the rank of a partition is the largest part minus the number of parts). A363231

Number of n-digit numbers with nonzero multiplicative digital root 6. A51817

Duplicate of A087710. A88706