Properties of the Number 27920

Twenty-Seven Thousand Nine Hundred Twenty

Basics

Value: 27919 → 27920 → 27921

Parity: even

Prime: No

Previous Prime: 27919

Next Prime: 27941

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 2 ⁴ × 5 × 349

Divisors: 1, 2, 4, 5, 8, 10, 16, 20, 40, 80

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 110110100010000

Octal: 66420

Duodecimal: 141A8

Hexadecimal: 6d10

Square: 779526400

Square Root: 167.09278859364338

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 k that can be expressed as k = w+x = y·z with w·x = (y+z)² where w, x, y, and z are all positive integers. A57369

a(n) is the number of vertices formed by n-secting the angles of a decagon. A335801

Number of kites, distinct up to congruence, on an n X n grid (or geoboard). A181946

Difference between the sum of odd parts and the sum of even parts in all the partitions of n. A208477

Number of partitions of n into parts not of the form 19k, 19k+5 or 19k-5. Also number of partitions with at most 4 parts of size 1 and differences between parts at distance 8 are greater than 1. A35974

Least k such that 2nd elementary symmetric function of {1,2,...,k} >= 4th elementary symmetric function of {1,2,...,n}. A27920