Properties of the Number 30945

Thirty Thousand Nine Hundred Forty-Five

Basics

Value: 30944 → 30945 → 30946

Parity: odd

Prime: No

Previous Prime: 30941

Next Prime: 30949

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 3 × 5 × 2063

Divisors: 1, 3, 5, 15, 2063, 6189, 10315, 30945

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 111100011100001

Octal: 74341

Duodecimal: 15AA9

Hexadecimal: 78e1

Square: 957593025

Square Root: 175.9119097730452

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 nodes in regular n-gon with all diagonals drawn. A7569

a(n) = 1 + 2·n² + 3·n³ + 4·n⁴ +5·n⁵ + 6·n⁶. A209264

Decimal part of a(n)^1/3 starts with a 'nine digits' anagram. A34278

Number of nX4 0..2 arrays with every 1 immediately preceded by 0 to the left or above, no 0 immediately preceded by a 0, and every 2 immediately preceded by 0 1 to the left or above. A203177

Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 1010-1111-0010 pattern in any orientation. A146627

Number of alternating permutations on 2n letters that avoid a certain pattern of length 5 (see Lewis, 2012, Appendix, for precise definition). A217821

T(n,k) is the number of n X k 0..2 arrays with every 1 immediately preceded by 0 to the left or above, no 0 immediately preceded by a 0, and every 2 immediately preceded by 0 1 to the left or above. A203181

[ exp(3/11)*n! ]. A30945