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Properties of the Number 2240

Two Thousand Two Hundred Forty

Basics

Value: 2239 → 2240 → 2241

Parity: even

Prime: No

Previous Prime: 2239

Next Prime: 2243

Digit Sum: 8

Digital Root: 8

Palindrome: No

Factorization: 2 6 × 5 × 7

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

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Representations

Binary: 100011000000

Octal: 4300

Duodecimal: 1368

Hexadecimal: 8c0

Square: 5017600

Square Root: 47.32863826479693

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 k that divide the (right) concatenation of all numbers <= k written in base 25 (most significant digit on left). A29470
Numbers that are divisible by exactly 8 primes counting multiplicity. A46310
Number of partitions of n that sorted in increasing order do not contain a part k in position k. A238394
Number of sets (in the Hausdorff metric geometry) at each location between two sets defined by a complete bipartite graph K(5,n) (with n at least 3) missing two edges, where the removed edges are incident to the same point in the 5 point part. A337416
Number of sets (in the Hausdorff metric geometry) at each location between two sets defined by a complete bipartite graph K(3,n) (with n at least 3) missing two edges, where the removed edges are not incident to the same vertex in the 3 point part but are incident to the same vertex in the other part. A337418
Scaled Chebyshev U-polynomials evaluated at i. Generalized Fibonacci sequence. A57087
n-φ-torial, or φ-torial of n: Product k, 1 <= k <= n, k relatively prime to n. A1783
Numerator of the harmonic mean of the first n positive integers. A102928
Triangle of idempotent numbers binomial(n,k)*kn-k, version 1. A59297
Number of permutations σ of [3n] without fixed points such that σ3 = Id. A52502