Properties of the Number 72471

Seventy-Two Thousand Four Hundred Seventy-One

Basics

Value: 72470 → 72471 → 72472

Parity: odd

Prime: No

Previous Prime: 72469

Next Prime: 72481

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 3 × 7 ² × 17 × 29

Divisors: 1, 3, 7, 17, 21, 29, 49, 51, 87, 119

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 10001101100010111

Octal: 215427

Duodecimal: 35B33

Hexadecimal: 11b17

Square: 5252045841

Square Root: 269.20438332241173

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

Second partial sums of A001891. A53809

Numbers with the property that in their factorization over distinct terms of A050376, the sums of prime and nonprime terms of A050376 are equal. A241270

G.f. A(x) satisfies: A(x) = x·exp(∑_k>=1 (A(x^k) + σ(k)*x^k)/k). A307975

Numbers k such that at least 7 of k, k+1, ..., k+9 are divisible by their least prime factor squared. A328817

Numbers k such that the product of distinct digits of k equals the sum of the prime divisors of k. A357262

Number of walks within N³ (the first octant of Z³) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, 0), (-1, 1, -1), (-1, 1, 1), (1, 0, 0), (1, 1, -1)}. A148272

Least k such that n+k is squarefree and coprime to n. A79115

Tetraprime numbers differing by more than 3 from any other squarefree number. A369238

Squares such that the sum of two neighboring term is also a square. A72471