Properties of the Number 8642

Eight Thousand Six Hundred Forty-Two

Basics

Value: 8641 → 8642 → 8643

Parity: even

Prime: No

Previous Prime: 8641

Next Prime: 8647

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 2 × 29 × 149

Divisors: 1, 2, 29, 58, 149, 298, 4321, 8642

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10000111000010

Octal: 20702

Duodecimal: 5002

Hexadecimal: 21c2

Square: 74684164

Square Root: 92.9623579735368

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

Total number of odd parts in all partitions of n. A66897

Bernoulli number B_n has denominator 354. A255684

Triangle read by rows: T(n,k) gives the number of ballot sequences of length n having exactly k descents, n>=0, 0<=k<=n. A238121

Number of partitions of n in which each part, with the possible exception of the largest, occurs at least three times. A116932

Irregular triangle read by rows: T(n,k) gives the number of ballot sequences of length n having k descents, n>=0, 0<=k<=A083920(n-1). A238122

Integer part of Gauss's Arithmetic-Geometric Mean M(1,n³). A127759

Cubes (n·n * n) in carryless arithmetic mod 10. A169885

Positions of zeros in A165582. A165583

Number of partitions of n where the minimal multiplicity of any part is 2. A244515

Expansion of (η(q⁴) * η(q¹²) / (η(q) * η(q³)))² in powers of q. A123647