Properties of the Number 30280

Thirty Thousand Two Hundred Eighty

Basics

Value: 30279 → 30280 → 30281

Parity: even

Prime: No

Previous Prime: 30271

Next Prime: 30293

Digit Sum: 13

Digital Root: 4

Palindrome: No

Factorization: 2 ³ × 5 × 757

Divisors: 1, 2, 4, 5, 8, 10, 20, 40, 757, 1514

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 111011001001000

Octal: 73110

Duodecimal: 15634

Hexadecimal: 7648

Square: 916878400

Square Root: 174.01149387324966

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 orbits of length n under the map whose periodic points are counted by A001641. A60166

Expansion of ∏_k>=1 ((1+x^k)/(1-x^k))^2·k-1. A261452

Column 2 of triangle in A288187. A333279

Number of parts in all partitions of n in which no part occurs more than 3 times. A117148

Numbers k such that A322582(k) <= A276086(k) <= A348507(k). A392602

Coefficients in q-expansion of (E₂*E₄ - E₆)²/(300*(E₆²-E₄³)), where E₂, E₄, E₆ are the Eisenstein series shown in A006352, A004009, A013973, respectively. A281373

a(n) is the determinant of the 2 X 2 matrix whose entries (when read by rows) are the n-th primes congruent to 1, 3, 5, 7 mod 8 respectively. A337145

Partial sums of A206032 (∏_d∣n σ(d)). A280085

Coefficients of a family of orthogonal polynomials. Triangle read by rows, T(n, k) for 0 <= k <= n. A322944

Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 87. A31765