Properties of the Number 30186

Thirty Thousand One Hundred Eighty-Six

Basics

Value: 30185 → 30186 → 30187

Parity: even

Prime: No

Previous Prime: 30181

Next Prime: 30187

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 2 × 3 ³ × 13 × 43

Divisors: 1, 2, 3, 6, 9, 13, 18, 26, 27, 39

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 111010111101010

Octal: 72752

Duodecimal: 15576

Hexadecimal: 75ea

Square: 911194596

Square Root: 173.7411868268431

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 4-way intersections in the interior of a regular 6n-gon. A137938

Number T(n,k) of partitions of n into parts of exactly k sorts; triangle T(n,k), n>=0, 0<=k<=n, read by rows. A255970

Expansion of g³/(1 - x·g)⁴, where g = 1+x·g³ is the g.f. of A001764. A391176

a(n) = (sum of first n primes) * n. A167214

McKay-Thompson series of class 36g for the Monster group. A103262

Kendell-Mann numbers in terms of Mahonian distribution. A181609

Values of m such that N=(am+1)(bm+1)(cm+1) is a 3-Carmichael number (A087788), where a,b,c = 1,2,25. A64249

Triangle read by rows, T(n,k) (n>=0, 0<=k<=n) coefficients of the partial fraction decomposition of rational functions generating the columns of A247495 (the Motzkin polynomials evaluated at nonnegative integers). A247497

Number of "funny trees" on n nodes. A322752

a(n) = 3·a(n-1) + a(n-2) - a(n-3) for n >= 3, a(0)=1, a(1)=2, a(2)=7. A30186