Properties of the Number 78387

Seventy-Eight Thousand Three Hundred Eighty-Seven

Basics

Value: 78386 → 78387 → 78388

Parity: odd

Prime: No

Previous Prime: 78367

Next Prime: 78401

Digit Sum: 33

Digital Root: 6

Palindrome: Yes

Factorization: 3 × 17 × 29 × 53

Divisors: 1, 3, 17, 29, 51, 53, 87, 159, 493, 901

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011001000110011

Octal: 231063

Duodecimal: 39443

Hexadecimal: 13233

Square: 6144521769

Square Root: 279.97678475187905

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) = (n + 1)*(20·n² + 19·n + 6)/6. A220084

Composite squarefree numbers n such that p-d(n) divides n+d(n), where p are the prime factors of n and d(n) the number of divisors of n. A228301

Let spm(n) be the sum of all prime factors of n counted with multiplicities (A001414); sequence gives numbers n such that spm(n+spm(n)) divides both n and n+spm(n). A131564

Moebius's μ of numbers which can be written as sum of a positive square and a positive cube. A78387