Properties of the Number 87428

Eighty-Seven Thousand Four Hundred Twenty-Eight

Basics

Value: 87427 → 87428 → 87429

Parity: even

Prime: No

Previous Prime: 87427

Next Prime: 87433

Digit Sum: 29

Digital Root: 2

Palindrome: No

Factorization: 2 ² × 11 × 1987

Divisors: 1, 2, 4, 11, 22, 44, 1987, 3974, 7948, 21857

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10101010110000100

Octal: 252604

Duodecimal: 42718

Hexadecimal: 15584

Square: 7643655184

Square Root: 295.6822618961104

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

Numerators of the convergents of the continued fraction for Catalan's constant L(2, chi4), where L(s, chi4) is the Dirichlet L-function for the non-principal character modulo 4. A153069

Denominators of the convergents of the continued fraction for Catalan's constant L(2, chi4), where L(s, chi4) is the Dirichlet L-function for the non-principal character modulo 4. A153070

a(n) = [(p-1)/2 * (q-1)/2] mod p where p = (n+1)th odd prime, q = n-th odd prime. A87428