Properties of the Number 30818

Thirty Thousand Eight Hundred Eighteen

Basics

Value: 30817 → 30818 → 30819

Parity: even

Prime: No

Previous Prime: 30817

Next Prime: 30829

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 2 × 19 × 811

Divisors: 1, 2, 19, 38, 811, 1622, 15409, 30818

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 111100001100010

Octal: 74142

Duodecimal: 15A02

Hexadecimal: 7862

Square: 949749124

Square Root: 175.55056251689996

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 A299257. A299263

Triangle read by rows: T(n,k) = number of permutations of [n] allowing i->i+j (mod n), j=0..k-1. A8305

Number of permutations p of [n] such that (n-p(i)+i) mod n >= 4 for all i. A4307

T(n,k)=Number of nXk nonnegative integer arrays with upper left 0 and every value within 3 of its king move distance from the upper left and every value increasing by 0 or 1 with every step right, diagonally se or down. A252938

Consider the figure made up of a row of n adjacent congruent rectangles, with diagonals of all possible rectangles drawn; a(n) = number of interior vertices where exactly two lines cross. A334701

Volume of the last section of the set of partitions of n from the shell model of partitions version "Boxes". A206440

Permanent of a certain cyclic n X n (0,1) matrix. A805

Number of partitions of n in which any two parts differ by at most 9. A218511

Triangle T(n,k) giving the number of permutations π of {1,2,...,n} such that for all i, π(i) is not in {i, i+1, ..., i+k-1} (mod n), with 0 <= k <= n - 1. A321352

Smallest of 6 consecutive integers divisible respectively by 6 consecutive primes. A72722