Properties of the Number 80415

Eighty Thousand Four Hundred Fifteen

Basics

Value: 80414 → 80415 → 80416

Parity: odd

Prime: No

Previous Prime: 80407

Next Prime: 80429

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 5 × 1787

Divisors: 1, 3, 5, 9, 15, 45, 1787, 5361, 8935, 16083

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011101000011111

Octal: 235037

Duodecimal: 3A653

Hexadecimal: 13a1f

Square: 6466572225

Square Root: 283.5753868021694

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(1) = 1; a(n) = ∑_{d∣n, d < n} p(n/d) * a(d), where p = A000041 (partition numbers). A328424

a(n) is the number of distinct substrings in the initial string of length n of the repetition-resistant sequence A079101. A80415

a(1) = 1; for n > 1, a(n) = smallest distinct positive integer such that gcd(a(n),a(n-k)) = 1, where k is each divisor of a(n) and n - k >= 1. A347179