Properties of the Number 8987

Eight Thousand Nine Hundred Eighty-Seven

Basics

Value: 8986 → 8987 → 8988

Parity: odd

Prime: No

Previous Prime: 8971

Next Prime: 8999

Digit Sum: 32

Digital Root: 5

Palindrome: No

Factorization: 11 × 19 × 43

Divisors: 1, 11, 19, 43, 209, 473, 817, 8987

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10001100011011

Octal: 21433

Duodecimal: 524B

Hexadecimal: 231b

Square: 80766169

Square Root: 94.79978902930111

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 that cannot be partitioned into two or more blocks with equal sums. A321451

Sum of digits = 8 times number of digits. A61425

Right-angled numbers with an internal digit as the vertex. A135602

G.f.: ∏_{i>=1, j>=1} (1 + x^i·j)^i·j. A280541

T(n,k)=Number of nXk 0..2 arrays with values 0..2 introduced in row major order, the number of instances of each value within one of each other, and every element equal to one or two horizontal or vertical neighbors. A199041

a(n) = n*(n + 5)*(n + 10)/6. A264443

a(n) = 25·n² - 2·n. A154376

Binomial transform of A001156. A294529

Sum of the largest parts in the partitions of n into 5 squarefree parts. A308845

Numbers k such that 25·k+1 is a square. A219259