Properties of the Number 20741

Twenty Thousand Seven Hundred Forty-One

Basics

Value: 20740 → 20741 → 20742

Parity: odd

Prime: No

Previous Prime: 20731

Next Prime: 20743

Digit Sum: 14

Digital Root: 5

Palindrome: No

Factorization: 7 × 2963

Divisors: 1, 7, 2963, 20741

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 101000100000101

Octal: 50405

Duodecimal: 10005

Hexadecimal: 5105

Square: 430189081

Square Root: 144.0173600646811

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

Cubic star numbers: a(n) = n³ + 4*∑_i=0..n-1 i². A51673

Positive integers of the form (6·m² + 1)/11. A179337

Total sum of parts greater than 1 in all the partitions of n except one copy of the smallest part greater than 1 of every partition. A196025

Sums of 5 distinct powers of 4. A38473

Values of w(k) when w(k-2), w(k-1), and w(k) are all odd, where w is A336957. A338071

a(n) is the total number of pentagrams in a variant of pentagram fractal after n iterations. A263418

Number of naturally embedded binary trees with n nodes that have no label greater than 0. A101488

Index k of the least colossally abundant number c=A004490(k) with σ(c)/c >= n. A110443

a(n) = p² - sum of digits of p^p, where p = prime(n). A140499

Number of compositions (ordered partitions) of n into quarter-squares (A002620). A282583