Properties of the Number 45440

Forty-Five Thousand Four Hundred Forty

Basics

Value: 45439 → 45440 → 45441

Parity: even

Prime: No

Previous Prime: 45439

Next Prime: 45481

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 2 ⁷ × 5 × 71

Divisors: 1, 2, 4, 5, 8, 10, 16, 20, 32, 40

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1011000110000000

Octal: 130600

Duodecimal: 22368

Hexadecimal: b180

Square: 2064793600

Square Root: 213.16660151158766

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 whose product of prime indices is twice their sum of prime indices. A326151

Numbers k such that sum of the divisors d of k divides 1 + 2 + ... + k = k(k+1)/2. A76617

Lesser of two consecutive numbers each divisible by a fifth power. A68783

The sum of the non-divisors of n (less than n) is a multiple of the sum of the divisors of n. A66860

Triangle of Poupard numbers g_n(k) read by rows, n>=1, 1<=k<=2n-1. A236934

a(n) = prime(n) + (1/n) * ∑_k=1..n-1 binomial(n,k) * k·a(k) * prime(n-k). A336185

Number of (n+1) X 6 0..1 arrays with the number of clockwise edge increases in every 2 X 2 subblock differing from each horizontal or vertical neighbor. A205190

a(n) is the product of n, the n-th prime and the n-th composite number. A331999

Number of ternary strings of length 2·n that have at least one 0 but less 0's than the combined number of 1's and 2's. A385252

Number of unordered triples of self-avoiding paths with nodes that cover all vertices of a convex n-gon. A359404