Properties of the Number 3920

Three Thousand Nine Hundred Twenty

Basics

Value: 3919 → 3920 → 3921

Parity: even

Prime: No

Previous Prime: 3919

Next Prime: 3923

Digit Sum: 14

Digital Root: 5

Palindrome: No

Factorization: 2 ⁴ × 5 × 7 ²

Divisors: 1, 2, 4, 5, 7, 8, 10, 14, 16, 20

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2730 Try Today's Challenge

Representations

Binary: 111101010000

Octal: 7520

Duodecimal: 2328

Hexadecimal: f50

Square: 15366400

Square Root: 62.609903369994115

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

Coordination sequence for "pcu-i" 3D uniform tiling. A299277

a(n) = 5·n². A33429

Number of integer compositions of n whose leaders of weakly increasing runs are distinct. A374632

Numbers whose unsorted prime signature is not unimodal. A332282

a(n) = ∏_{k=0..floor(log₃(n))} floor(n/3^k), n>=1. A132027

Number of ways to place 3 nonattacking kings on an n X n board. A61996

Numbers > 1 where the maximum prime index equals the number of prime factors minus the number of distinct prime factors. A324517

G.f. A(x) satisfies A(x) = 1 + x + x·A(x)⁴. A366267

a(n) = |{m : multiplicative order of 8 mod m = n}|. A59890

Triangle read by rows: T(n,k) = number of ways to place k nonattacking kings on an n X n board. A193580