Properties of the Number 72560

Seventy-Two Thousand Five Hundred Sixty

Basics

Value: 72559 → 72560 → 72561

Parity: even

Prime: No

Previous Prime: 72559

Next Prime: 72577

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 2 ⁴ × 5 × 907

Divisors: 1, 2, 4, 5, 8, 10, 16, 20, 40, 80

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 10001101101110000

Octal: 215560

Duodecimal: 35BA8

Hexadecimal: 11b70

Square: 5264953600

Square Root: 269.3696345173301

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 tilings of a 5 X n rectangle using n pentominoes of shapes V, U, X, N. A247127

Numbers k such that k² + k - 1 and k² + k + 1 are twin primes and (k + 1)*(k + 1) + k + 1 - 1 and (k + 1)*(k + 1) + k + 1 + 1 are also twin primes. A88498

Numbers k such that 7·10^k + 3·R_k + 6 is prime, where R_k = 11...1 is the repunit (A002275) of length k. A103056

Numbers k such that Bernoulli number B_k has denominator 230010. A295593

n·10⁴-1, n·10⁴-3, n·10⁴-7 and n·10⁴-9 are all prime. A64978

G.f. A(x,y) satisfies: x·y*A(x,y) = ∑_n=-oo..+oo (-1)ⁿ * x^n*(n+1/2) * A(x,y)ⁿ, with coefficients T(n,k) of xⁿ*y^k in A(x,y) given as a triangle read by rows. A355360

Denominators of w(n) where w(1)=w(2)=w(3)=1, w(n)=(w(n-1)*w(n-2)+(w(n-1)+w(n-2))/3) / w(n-3). A72560