Properties of the Number 86240

Eighty-Six Thousand Two Hundred Forty

Basics

Value: 86239 → 86240 → 86241

Parity: even

Prime: No

Previous Prime: 86239

Next Prime: 86243

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 2 ⁵ × 5 × 7 ² × 11

Divisors: 1, 2, 4, 5, 7, 8, 10, 11, 14, 16

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

8509 Try Today's Challenge

Representations

Binary: 10101000011100000

Octal: 250340

Duodecimal: 41AA8

Hexadecimal: 150e0

Square: 7437337600

Square Root: 293.66647748764245

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

A partition product of Stirling₂ type [parameter k = 2] with biggest-part statistic (triangle read by rows). A157402

a(0) = a(1) = 1; a(n) = 2 * ∑_k=0..n-2 a(k) * a(n-k-2). A354733

Numbers k such that k, k+1 and k+2 have exactly 4 distinct prime factors. A364309

a(n) = A000043(n) - 3. A139480

Partition number array, called M32(-2), related to A004747(n,m) = |S2(-2;n,m)| (generalized Stirling triangle). A143172

Expansion of ( 1+x² ) / ( 1-4·x+5·x²-4·x³ ). A271898

Numbers k such that A360327(k) = A360327(k+1) > 1. A360358

Irregular table read by rows: The number of k-faced polyhedra, where k >= 4, created when an n-bipyramid, formed from two n-gonal pyraminds joined at the base, is internally cut by all the planes defined by any three of its vertices. A338825

O.g.f. A(x) satisfies: [xⁿ] exp( n³*x - n²*A(x) ) = 0 for n >= 1. A317346

E.g.f. A(x) satisfies: [xⁿ] exp(n³*x) / A(x)^n² = 0 for n >= 1. A317345