Properties of the Number 45990

Forty-Five Thousand Nine Hundred Ninety

Basics

Value: 45989 → 45990 → 45991

Parity: even

Prime: No

Previous Prime: 45989

Next Prime: 46021

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 2 × 3 ² × 5 × 7 × 73

Divisors: 1, 2, 3, 5, 6, 7, 9, 10, 14, 15

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1011001110100110

Octal: 131646

Duodecimal: 22746

Hexadecimal: b3a6

Square: 2115080100

Square Root: 214.4527920079382

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 that have 11 terms in their Zeckendorf representation. A179251

a(n) = n³ - n*(n+1)/2. A160378

Triangle read by rows T(n, m) = σ^*_(n-m)(m), n >= 1, m = 1, 2, ..., n, with σ^*_(k)(n) given in a comment in A279395. A279396

a(n) = ∑_d∣n (-1)^n/d+1*d⁶. A284927

Square array T(n,k), n >= 1, k >= 1, read by antidiagonals downwards, where T(n,k) = ∑_j=1..n (-1)^j+1 * floor(n/j)^k. A344726

Square array A(n,k), n >= 1, k >= 0, read by antidiagonals: A(n,k) = ∑_d∣n (-1)^n/d+1*d^k. A322081

Number of functions from [1,2,...,n] to [1,2,...,n] such that the image contains exactly two elements. A68605

a(n) = ∑_d∣n (-1)^n/d+1*dⁿ. A321438

a(n) = ∑_k=1..n (-1)^k+1 * floor(n/k)ⁿ. A344724

Triangle read by rows. T(n, k) = FallingFactorial(n - k, k) * Stirling2(n - k, k), for n >= 0 and 0 <= k <= n//2, where '//' denotes integer division. A362789