Properties of the Number 86156

Eighty-Six Thousand One Hundred Fifty-Six

Basics

Value: 86155 → 86156 → 86157

Parity: even

Prime: No

Previous Prime: 86143

Next Prime: 86161

Digit Sum: 26

Digital Root: 8

Palindrome: No

Factorization: 2 ² × 7 × 17 × 181

Divisors: 1, 2, 4, 7, 14, 17, 28, 34, 68, 119

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

8509 Try Today's Challenge

Representations

Binary: 10101000010001100

Octal: 250214

Duodecimal: 41A38

Hexadecimal: 1508c

Square: 7422856336

Square Root: 293.5234232561347

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

T(n,k)=Number of nXk 0..6 arrays with every nonzero element less than or equal to at least two horizontal and vertical neighbors. A203389

Number of nX2 0..6 arrays with every nonzero element less than or equal to at least two horizontal and vertical neighbors. A203383

Values of bphi(k) = bphi(k+1), where bphi is the bi-unitary analog of Euler's totient function (A116550). A294030

Number of nX7 0..6 arrays with every nonzero element less than or equal to at least two horizontal and vertical neighbors. A203388

a(n) = σ(n²) - n*σ(n). A86156