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Properties of the Number 3186

Three Thousand One Hundred Eighty-Six

Basics

Value: 3185 → 3186 → 3187

Parity: even

Prime: No

Previous Prime: 3181

Next Prime: 3187

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 2 × 3 3 × 59

Divisors: 1, 2, 3, 6, 9, 18, 27, 54, 59, 118

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: Yes

Tetrahedral: No

Today's Target

8509 Try Today's Challenge

Representations

Binary: 110001110010

Octal: 6162

Duodecimal: 1A16

Hexadecimal: c72

Square: 10150596

Square Root: 56.444663166680336

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

Heptagonal numbers (or 7-gonal numbers): n*(5·n-3)/2. A566
Number of factorization patterns of polynomials of degree n over integers. A6171
The game of Mousetrap with n cards (given n letters and n envelopes, how many ways are there to fill the envelopes so that at least one letter goes into its right envelope?). A2467
11-gonal (or hendecagonal) numbers: a(n) = n*(9·n-7)/2. A51682
Multiples of 18 containing a 18 in their decimal representation. A121038
Number of regions in a regular drawing of the complete bipartite graph Kn,n. A290131
a(n) = σ(n) * A003961(n), where A003961 shifts the prime factorization of n one step towards larger primes, and σ is the sum of the divisors of n. A341529
Energy function for hexagonal lattice. A7239
Numbers whose multiset of prime factors is separable but has no alternating permutation. A345173
Number T(n,k) of permutations p of [n] such that k is the maximum of 0 and the number of elements in any integer interval [p(i)..i+n*[i<p(i)]]; triangle T(n,k), n>=0, 0<=k<=n, read by rows. A324563