Properties of the Number 18286

Eighteen Thousand Two Hundred Eighty-Six

Basics

Value: 18285 → 18286 → 18287

Parity: even

Prime: No

Previous Prime: 18269

Next Prime: 18287

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 2 × 41 × 223

Divisors: 1, 2, 41, 82, 223, 446, 9143, 18286

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100011101101110

Octal: 43556

Duodecimal: A6BA

Hexadecimal: 476e

Square: 334377796

Square Root: 135.22573719525437

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

a(n) is the number of compositions of n where the first part is the largest part and the last part is not 1. Row sums of A368579. A368279

a(n) is the smallest index m such that ∑_k=2..m 1/PrimePi(k) >= n, where PrimePi()=A000720(). A74633

Number of length-n quasiperiodic binary strings. A320434

Number of partitions of n with at most five part sizes. A364809

Truncated triangular pyramid numbers: a(n) = (n-7)*(n² + 10·n - 108)/6, n >= 8. A51941

Smallest m such that A258062(m) = n. A258063

Number of conjugacy classes of solvable subgroups of the symmetric group. A218911

a(n) = ∑_k=0..n k·A000009(k). A270105

a(n) = number of shortest addition chains for n that are Brauer chains. A79301

a(n) = number of shortest addition chains ending in n. A79300