Properties of the Number 22540

Twenty-Two Thousand Five Hundred Forty

Basics

Value: 22539 → 22540 → 22541

Parity: even

Prime: No

Previous Prime: 22531

Next Prime: 22541

Digit Sum: 13

Digital Root: 4

Palindrome: No

Factorization: 2 ² × 5 × 7 ² × 23

Divisors: 1, 2, 4, 5, 7, 10, 14, 20, 23, 28

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 101100000001100

Octal: 54014

Duodecimal: 11064

Hexadecimal: 580c

Square: 508051600

Square Root: 150.1332741266905

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

Lesser of amicable pair m < n defined by t(n) = m and t(m) = n where t(n) = ψ(n) - n and ψ(n) = A001615(n) is the Dedekind ψ function. A323329

Number of self-avoiding walks on a 2-dimensional square lattice where the walk consists of steps with incrementing length from 1 to n. A334877

Number of nontrivially compound perfect squared rectangles of order n up to symmetries of the rectangle. A217153

Number of Garden of Eden partitions of n in Bulgarian Solitaire. A123975

Alternating sum of hexagonal pyramidal numbers. A266677

Number of chiral pairs of polyominoes with n octagonal cells of the hyperbolic regular tiling with Schläfli symbol {8,oo}. A389938

Partial sums of A051865. A50441

Number of distinct lines passing through 3 or more points in an n X n grid. A225606

Number of days after Mar 01 00 such that the date written in the format DD.MM.YY is palindromic. A210887

a(n) is the total multiplicity of all products of Schur functions s(λ)*s(λ) with λ a partition of n. A296625