Properties of the Number 78346

Seventy-Eight Thousand Three Hundred Forty-Six

Basics

Value: 78345 → 78346 → 78347

Parity: even

Prime: No

Previous Prime: 78341

Next Prime: 78347

Digit Sum: 28

Digital Root: 1

Palindrome: No

Factorization: 2 × 43 × 911

Divisors: 1, 2, 43, 86, 911, 1822, 39173, 78346

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 10011001000001010

Octal: 231012

Duodecimal: 3940A

Hexadecimal: 1320a

Square: 6138095716

Square Root: 279.90355481844097

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

Expansion of ∑_k>=1 (-1 + ∏_j>=1 (1 + j·x^k·j)). A318290

a(1) = 1; a(n) = ∑_k=1..n-1 a(floor((n-1)/k)). A78346

Array read by antidiagonals: ((z+sqrt(x))/2)^k + ((z-sqrt(x))/2)^k for columns k >= 0 and rows n >= 0, where x = 4·n+1 and y = ceiling(sqrt(x)) and z = y+1-(y mod 2). A309853