Properties of the Number 87000

Eighty-Seven Thousand

Basics

Value: 86999 → 87000 → 87001

Parity: even

Prime: No

Previous Prime: 86993

Next Prime: 87011

Digit Sum: 15

Digital Root: 6

Palindrome: No

Factorization: 2 ³ × 3 × 5 ³ × 29

Divisors: 1, 2, 3, 4, 5, 6, 8, 10, 12, 15

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10101001111011000

Octal: 251730

Duodecimal: 42420

Hexadecimal: 153d8

Square: 7569000000

Square Root: 294.95762407505254

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

Composite numbers k such that k - φ(k) divides σ(k) - k. A68418

Integer quotient defining A068418 is 3. A69737

Number of standard Young tableaux with 2n cells and n as last value in the first row. A245000

Number of standard Young tableaux with n cells and 7 as last value in the first row. A245005

Expansion of ∏_k>=1 (1 - 4·x^k)/(1 + 4·x^k). A303402

Least k such that p = k² + 1 and q = (k+2n)² + 1 are two consecutive prime numbers of the same form with q - p square. A339008

Number of single component edge-subgraphs in Moebius ladder M_n. A20868

Composite n such that n reduced mod(φ(n)) = σ(n) reduced mod(n). A68495

Sequence of coefficients of x¹ in marked mesh pattern generating function Q_n,132^0,4,0,0(x). A212347

Half length of periodic part of decimal expansion of 1/p for those primes having a periodic part of even length. A87000