Properties of the Number 78725

Seventy-Eight Thousand Seven Hundred Twenty-Five

Basics

Value: 78724 → 78725 → 78726

Parity: odd

Prime: No

Previous Prime: 78721

Next Prime: 78737

Digit Sum: 29

Digital Root: 2

Palindrome: No

Factorization: 5 ² × 47 × 67

Divisors: 1, 5, 25, 47, 67, 235, 335, 1175, 1675, 3149

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011001110000101

Octal: 231605

Duodecimal: 39685

Hexadecimal: 13385

Square: 6197625625

Square Root: 280.579756931964

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

Odd numbers k that can be factored to such a pair of coprime factors·and y that A347381(k) < min(A347381(x), A347381(y)). A347390

Govindarajan's triangle C^{box 2} arising in enumeration of multi-dimensional partitions, read by rows. A216805

a(n) = prime(n*(n+1)/2+4). A78725

Doubly Orderly Numbers: composite numbers that are orderly for two values of k. A171439

G.f. satisfies: [xⁿ] A(x)⁽ⁿ⁺¹²) = (n+1)² for n>=1; that is, the coefficient of xⁿ in the (n+1)² power of g.f. A(x) equals (n+1)². A172440