Properties of the Number 30258

Thirty Thousand Two Hundred Fifty-Eight

Basics

Value: 30257 → 30258 → 30259

Parity: even

Prime: No

Previous Prime: 30253

Next Prime: 30259

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 2 × 3 ² × 41 ²

Divisors: 1, 2, 3, 6, 9, 18, 41, 82, 123, 246

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 111011000110010

Octal: 73062

Duodecimal: 15616

Hexadecimal: 7632

Square: 915546564

Square Root: 173.9482681718907

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(n) = 18·n². A195321

Numbers n such that the sum_i (d_iⁱ) of the i-th powers of their sorted divisors d₁< d₂<...< n is prime. A180852

Even refactorable numbers k such that the number r of odd divisors of k and the number s of even divisors of k are both odd divisors of k. A120361

Numbers k such that (A276086(k)/s)^s >= k^s-1 and A276086(k) <= A003415(k), where A003415 is the arithmetic derivative, A276086 is the primorial base exp-function, and s = bigomega(k). A370128

Expansion of ∏_k>=1 (1 - x^k / (1 - k·x)). A336991

Numbers k such that σ(k) > 2·k and A003415(σ(k)) < k, where A003415 is the arithmetic derivative, and σ is the sum of divisors function. A347889

A054221 without cubes. A54224

Non-deficient numbers with odd σ such that the sum of the even divisors is twice the sum of the odd divisors. A171642

a(n) = a(n-1) + a(n-2) - [a(n-3)/4] - [a(n-4)/2] - [a(n-5)/4]. A173564

Refactorable numbers that are twice a square. A376114