Properties of the Number 30165

Thirty Thousand One Hundred Sixty-Five

Basics

Value: 30164 → 30165 → 30166

Parity: odd

Prime: No

Previous Prime: 30161

Next Prime: 30169

Digit Sum: 15

Digital Root: 6

Palindrome: No

Factorization: 3 × 5 × 2011

Divisors: 1, 3, 5, 15, 2011, 6033, 10055, 30165

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 111010111010101

Octal: 72725

Duodecimal: 15559

Hexadecimal: 75d5

Square: 909927225

Square Root: 173.68074159215234

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

Numbers k such that 2·k+1, 4·k+1, 8·k+1 and 16·k+1 are primes. A124412

Form a conjugate partition of row with 1+1+1 in first row. all other rows are the union of their parents. a(n) = number of types of piles in the n-th row. A64480

Number of nX3 0..1 arrays with every element unequal to 1, 2, 5, 6 or 7 king-move adjacent elements, with upper left element zero. A305177

Numbers k such that 3^k*k³ - 2 is a prime. A366956

Triangle, read by rows, where T(n,k) = T(n-1,k-1) + 2·T(n,k-1) when k > 0, else T(n,0) = T(n-1,n-1) when n > 0, with T(0,0) = 1. A376177

Numbers m such that uphi(σ(m)) = 2m, where the unitary φ function (A047994) is defined by: if x = p1^r1*p2^r2*p3^r3*... then uphi(x) = (p1^r1 - 1)*(p2^r2 - 1)*(p3^r3 - 1)*... A30165

Number of entries in the seventh cycles of all permutations of [n]. A285235