Properties of the Number 4640

Four Thousand Six Hundred Forty

Basics

Value: 4639 → 4640 → 4641

Parity: even

Prime: No

Previous Prime: 4639

Next Prime: 4643

Digit Sum: 14

Digital Root: 5

Palindrome: No

Factorization: 2 ⁵ × 5 × 29

Divisors: 1, 2, 4, 5, 8, 10, 16, 20, 29, 32

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2730 Try Today's Challenge

Representations

Binary: 1001000100000

Octal: 11040

Duodecimal: 2828

Hexadecimal: 1220

Square: 21529600

Square Root: 68.11754546370561

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 of partitions of n into squarefree parts. A73576

Number of compositions with alternating parts weakly decreasing (or weakly increasing). A342528

A B₂ sequence: a(n) = least value such that sequence increases and pairwise sums of distinct elements are all distinct. A11185

BII-numbers of blobs. A326751

a(n) = n³ - n² + n - 1 = (n-1) * (n² + 1). A62158

T(n,k)=Number of (n+1)X(k+1) arrays of permutations of 0..(n+1)*(k+1)-1 with each element having directed index change -1,1 -1,2 1,0 or 0,-1. A264550

a(n) = n*(11·n+1)/2. A22269

Products of the 5th power of a prime and 2 distinct primes (p⁵*q·r). A179667

T(n,k)=Number of nXk 0..1 arrays with every element equal to 1, 2, 3 or 4 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero. A302381

Lexicographically earliest sequence containing 3 and all positive integers n such that the prime indices of n - 1 already belong to the sequence. A324703