Properties of the Number 86816

Eighty-Six Thousand Eight Hundred Sixteen

Basics

Value: 86815 → 86816 → 86817

Parity: even

Prime: No

Previous Prime: 86813

Next Prime: 86837

Digit Sum: 29

Digital Root: 2

Palindrome: No

Factorization: 2 ⁵ × 2713

Divisors: 1, 2, 4, 8, 16, 32, 2713, 5426, 10852, 21704

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10101001100100000

Octal: 251440

Duodecimal: 422A8

Hexadecimal: 15320

Square: 7537017856

Square Root: 294.64554977124635

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(1)=5, a(2)=2, a(n) = 5·a(n-1) + 2·a(n-2). A189746

Number of 2-matchings of the n X n grid graph. A242856

Number of binary strings of length n with equal numbers of 00101 and 01010 substrings. A164245

Number of nX4 0..1 arrays with every element unequal to 0, 1, 2, 5 or 6 king-move adjacent elements, with upper left element zero. A304600

Numbers n such that 10ⁿ - 99 is prime. A178439

T(n,k)=Number of nXk 0..1 arrays with every element unequal to 0, 1, 2, 5 or 6 king-move adjacent elements, with upper left element zero. A304604

Smaller member of a twin prime pair with a triangular sum. A86816