Properties of the Number 20451

Twenty Thousand Four Hundred Fifty-One

Basics

Value: 20450 → 20451 → 20452

Parity: odd

Prime: No

Previous Prime: 20443

Next Prime: 20477

Digit Sum: 12

Digital Root: 3

Palindrome: No

Factorization: 3 × 17 × 401

Divisors: 1, 3, 17, 51, 401, 1203, 6817, 20451

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100111111100011

Octal: 47743

Duodecimal: BA03

Hexadecimal: 4fe3

Square: 418243401

Square Root: 143.00699283601483

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 that are the sum of 6 nonzero 8th powers. A3384

a(n) = ∑_k=0..n T(n,k), T given by A026780. A26787

Odd composite numbers k such that A053575(k) [the odd part of φ] divides k-1. A339880

A Fielder sequence: a(n) = a(n-1) + a(n-2) - a(n-7), n >= 8. A1636

Sum of distinct nonzero sixth powers. A194769

Number of partitions of floor(5n/2) into n nonnegative integers each no more than 5. A1975

Number of strictly increasing arrangements of 5 numbers in -(n+3)..(n+3) with sum zero. A188183

Position where n (presumably) appears the last time in A107261, or 0 if n keeps appearing. A107262

a(n) is the number of distinct five-cuboid combinations filling n X n X n cube without allowing a cut spanning through the full cube in any of filling positions. A384743

Number of n X 5 0..1 arrays with every row and column running average nondecreasing rightwards and downwards, and the number of instances of each value within one of each other. A201501