Properties of the Number 72158

Seventy-Two Thousand One Hundred Fifty-Eight

Basics

Value: 72157 → 72158 → 72159

Parity: even

Prime: No

Previous Prime: 72139

Next Prime: 72161

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 2 × 109 × 331

Divisors: 1, 2, 109, 218, 331, 662, 36079, 72158

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10001100111011110

Octal: 214736

Duodecimal: 35912

Hexadecimal: 119de

Square: 5206776964

Square Root: 268.62241157431373

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 compositions (ordered partitions) of n into squarefree parts that do not divide n. A300706

Iterates of the Christmas tree pattern map (A367508), where each row is interpreted as a single binary word and converted to decimal. A368398

Numerator of ∑_k=1..n φ(k)/k³. A72158