Properties of the Number 22986

Twenty-Two Thousand Nine Hundred Eighty-Six

Basics

Value: 22985 → 22986 → 22987

Parity: even

Prime: No

Previous Prime: 22973

Next Prime: 22993

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 2 × 3 ² × 1277

Divisors: 1, 2, 3, 6, 9, 18, 1277, 2554, 3831, 7662

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 101100111001010

Octal: 54712

Duodecimal: 11376

Hexadecimal: 59ca

Square: 528356196

Square Root: 151.61134522191932

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 T(n,k) of set partitions of [n] such that the maximal absolute difference between consecutive elements within a block equals k; triangle T(n,k), n>=0, 0<=k<=max(n-1,0), read by rows. A287213

a(n) = sum of absolute valued coefficients of (1+x-4·x²)ⁿ. A84775

Row 4 of table A162424. A162427

Coordination sequence for root lattice B₃. A22145

Column 1 of triangle A370040. A370151

An exotic continued fraction (for the real root of x³ - 8·x - 10). A2937

Pisot sequence T(3,7), a(n) = floor(a(n-1)²/a(n-2)). A20746

Number of 9-compositions of n: matrices with 9 rows of nonnegative integers with positive column sums and total element sum n. A261801

Number of set partitions of [n] such that the maximal absolute difference between consecutive elements within a block equals six. A294055

Integers k such that 10^k + 61 is a prime number. A135116