Properties of the Number 30921

Thirty Thousand Nine Hundred Twenty-One

Basics

Value: 30920 → 30921 → 30922

Parity: odd

Prime: No

Previous Prime: 30911

Next Prime: 30931

Digit Sum: 15

Digital Root: 6

Palindrome: No

Factorization: 3 × 11 × 937

Divisors: 1, 3, 11, 33, 937, 2811, 10307, 30921

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 111100011001001

Octal: 74311

Duodecimal: 15A89

Hexadecimal: 78c9

Square: 956108241

Square Root: 175.84368058022443

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

Partial sums of A255744. A255765

Ceiling of γ(n + 1/3)/γ(1/3). A20134

-a(n) is inverse EULER transform of -A000041(n). A95975

G.f. 1/sum(k>=0, (-1)^k * x^k*(k+1/2)). A208061

Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 803", based on the 5-celled von Neumann neighborhood. A273578

a(n) is the integer part of the area of a regular n-gon whose side lengths are n. A374296

Convolution of A000201 with itself. A23663

Number of permutations satisfying -k<=p(i)-i<=r and p(i)-i not in I, i=1..n, with k=1, r=5, I={2}. A79969

[ exp(1/14)*n! ]. A30921