Properties of the Number 98215

Ninety-Eight Thousand Two Hundred Fifteen

Basics

Value: 98214 → 98215 → 98216

Parity: odd

Prime: No

Previous Prime: 98213

Next Prime: 98221

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 5 × 13 × 1511

Divisors: 1, 5, 13, 65, 1511, 7555, 19643, 98215

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10111111110100111

Octal: 277647

Duodecimal: 48A07

Hexadecimal: 17fa7

Square: 9646186225

Square Root: 313.3927248676969

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

Start with a single hexagon; at n-th generation add a hexagon at each expandable vertex; a(n) is the sum of all label values at n-th generation. (See comment for construction rules.) A247620

a(0) = 0; thereafter a(n) = a(n-1)/2 + n if a(n-1) is even, otherwise a(n) = a(n-1) + a(n-2). A350129

Numbers n such that reverse(σ(n)) = n - φ(n) = cototient(n). A98215