Properties of the Number 20635

Twenty Thousand Six Hundred Thirty-Five

Basics

Value: 20634 → 20635 → 20636

Parity: odd

Prime: No

Previous Prime: 20627

Next Prime: 20639

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 5 × 4127

Divisors: 1, 5, 4127, 20635

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 101000010011011

Octal: 50233

Duodecimal: BB37

Hexadecimal: 509b

Square: 425803225

Square Root: 143.64887747560022

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 locally disjoint rooted trees with n nodes, meaning no branch overlaps any other (unequal) branch of the same root. A316473

Numbers k such that 4 is the smallest decimal digit of k³. A291643

Number of (w,x,y) with all terms in {0,...,n} and w ≠ max(|w-x|,|x-y|,|y-w|). A213498

Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 974", based on the 5-celled von Neumann neighborhood. A273853

a(n) = prime(2·n²) - 2·n². A141086

Expansion of ∑_k>=0 x^k * ∏_j=1..k (1 + j·x^j). A306730

Dimensions of the Jordan operad. A1776

Smallest nonempty set S containing prime divisors of 10k+7 for each k in S. A20635

Array read by downward antidiagonals: T(n,k) is the number of partitions of [n], n >= 1, k >= 1, into cycles labeled with positive integers, such that the labels sum to k. A388788