Properties of the Number 78766

Seventy-Eight Thousand Seven Hundred Sixty-Six

Basics

Value: 78765 → 78766 → 78767

Parity: even

Prime: No

Previous Prime: 78737

Next Prime: 78779

Digit Sum: 34

Digital Root: 7

Palindrome: No

Factorization: 2 × 39383

Divisors: 1, 2, 39383, 78766

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011001110101110

Octal: 231656

Duodecimal: 396BA

Hexadecimal: 133ae

Square: 6204082756

Square Root: 280.6528104259781

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) is the smallest number which can be represented as the sum of n distinct nonzero n-gonal pyramidal numbers in exactly n ways, or -1 if no such number exists. A350397

Expansion of g.f. A(x) satisfying A(x)² = (1+x) * A(x·A(x)) with A(0) = 1. A120056

Numbers k such that sum of digits of k = sum of digits of anti-divisors of k. A213239

Total sum of noncomposite parts in all partitions of n. A326958

Number of primes less than n*φ(n). A78766