Properties of the Number 30915

Thirty Thousand Nine Hundred Fifteen

Basics

Value: 30914 → 30915 → 30916

Parity: odd

Prime: No

Previous Prime: 30911

Next Prime: 30931

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 3 ³ × 5 × 229

Divisors: 1, 3, 5, 9, 15, 27, 45, 135, 229, 687

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 111100011000011

Octal: 74303

Duodecimal: 15A83

Hexadecimal: 78c3

Square: 955737225

Square Root: 175.82661914511124

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) = (4·n³ - 6·n² + 8·n + 3)/3. A161712

Numbers k such that σ(k) = ψ(k) + π(k) + ω(k)⁷. A393090

L-th order palindromes with L > 2. A89381

Number of (n+2)X(4+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000001 00000101 or 00010101. A260102

Number of nX3 0..2 arrays with no element unequal to more than four of its king-move neighbors, with the exception of exactly two elements, and with new values introduced in order 0 sequentially upwards. A282156

[ exp(1/15)*n! ]. A30915