Properties of the Number 87198

Eighty-Seven Thousand One Hundred Ninety-Eight

Basics

Value: 87197 → 87198 → 87199

Parity: even

Prime: No

Previous Prime: 87187

Next Prime: 87211

Digit Sum: 33

Digital Root: 6

Palindrome: No

Factorization: 2 × 3 × 14533

Divisors: 1, 2, 3, 6, 14533, 29066, 43599, 87198

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10101010010011110

Octal: 252236

Duodecimal: 42566

Hexadecimal: 1549e

Square: 7603491204

Square Root: 295.2930747579428

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

a(n) = a(1) + a(2) + ... + a(n-1) + a(m) for n >= 4, where m = 2·n - 2 - 2^p+1 and p is the unique integer such that 2^p < n - 1 <= 2^p+1, starting with a(1) = 1, a(2) = 3, and a(3) = 2. A49971

Decimal representation of the diagonal from the corner to the origin of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 406", based on the 5-celled von Neumann neighborhood. A288044

Numbers k for which A064380(k) = k/2. A185078

Numbers k such that iphi(k) divides k, where iphi is the infinitary Euler φ function (A064380). A373057

Decimal expansion of 1/(2·sqrt(π)). A87198