Properties of the Number 12188

Twelve Thousand One Hundred Eighty-Eight

Basics

Value: 12187 → 12188 → 12189

Parity: even

Prime: No

Previous Prime: 12163

Next Prime: 12197

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 2 ² × 11 × 277

Divisors: 1, 2, 4, 11, 22, 44, 277, 554, 1108, 3047

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10111110011100

Octal: 27634

Duodecimal: 7078

Hexadecimal: 2f9c

Square: 148547344

Square Root: 110.39927535994066

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 integer partitions of n whose parts do not have the same mean as median. A359894

Number of strict compositions of n that are neither unimodal nor is their negation. A332874

a(n) = ∑_{x₁∣n, x₂∣n, x₃∣n, x₄∣n, x₅∣n} gcd(x₁,x₂,x₃,x₄,x₅). A344139

Number of triangles, distinct up to congruence, on a centered hexagonal grid of size n. A241231

a(n) = 1331·n - 1122. A157441

Integers n such that for all i > n the largest prime factor of product(i+k, {k,0,7}) exceeds the largest prime factor of product(n+k, {k,0,7}). A199407

Structured tetragonal anti-prism numbers. A100182

Alternating LCM-sum: a(n) = ∑_k=1..n (-1)^k-1*lcm(k,n). A199806

Number of n X 2 0,1 arrays indicating 2 X 2 subblocks of some larger (n+1) X 3 binary array having a sum of two or less, with rows and columns of the latter in lexicographically nondecreasing order. A227259

Numbers k such that k⁴ + 1, (k+2)⁴ + 1 and (k+4)⁴ + 1 are all primes. A73476