Properties of the Number 78728

Seventy-Eight Thousand Seven Hundred Twenty-Eight

Basics

Value: 78727 → 78728 → 78729

Parity: even

Prime: No

Previous Prime: 78721

Next Prime: 78737

Digit Sum: 32

Digital Root: 5

Palindrome: No

Factorization: 2 ³ × 13 × 757

Divisors: 1, 2, 4, 8, 13, 26, 52, 104, 757, 1514

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011001110001000

Octal: 231610

Duodecimal: 39688

Hexadecimal: 13388

Square: 6198097984

Square Root: 280.58510295452254

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

Row 4 of table A162430. A162433

Number of partitions of n such that (greatest part) - (least part) < number of parts. A237830

Positive integers with the property that if the base-3 representation is reversed the result is twice the original number. A173951

Number of 3-step knight's tours on an (n+2) X (n+2) board summed over all starting positions. A186852

T(n,k) = (n-1)*A220555(n,k), n,k = 2,3,.... A187772

Numbers k for which 6k+1, 24k+5, 432k²+72k-1, and 432k²+90k-1 are all prime. A175513

a(n) = 4*(3ⁿ-1). A302507

a(n) is the smallest m such that m < 10ⁿ, 10ⁿ + m is prime and if the natural number k is such that 1 < k < 10 and 3 doesn't divide k·10ⁿ + m then k·10ⁿ+m is prime. A78728