Properties of the Number 40728

Forty Thousand Seven Hundred Twenty-Eight

Basics

Value: 40727 → 40728 → 40729

Parity: even

Prime: No

Previous Prime: 40709

Next Prime: 40739

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 2 ³ × 3 × 1697

Divisors: 1, 2, 3, 4, 6, 8, 12, 24, 1697, 3394

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 1001111100011000

Octal: 117430

Duodecimal: 1B6A0

Hexadecimal: 9f18

Square: 1658769984

Square Root: 201.81179351068658

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 A(n,k) of compositions of n where each part i is marked with a word of length i over a k-ary alphabet whose letters appear in alphabetical order; square array A(n,k), n>=0, k>=0, read by antidiagonals. A261780

Number of 4-compositions of n. A145840

a(n) = number of segments (edges) in the configuration A290447(n). A290866

The number of edges on a 2 by 1 ellipse formed by the straight line segments mutually connecting all points formed by dividing the ellipse into 2n equal angle sectors from its origin. A341764

Number of partitions of n into parts not of the form 23k, 23k+11 or 23k-11. Also number of partitions with at most 10 parts of size 1 and differences between parts at distance 10 are greater than 1. A35999

Continued fraction for sqrt(756). A40728