Properties of the Number 68380

Sixty-Eight Thousand Three Hundred Eighty

Basics

Value: 68379 → 68380 → 68381

Parity: even

Prime: No

Previous Prime: 68371

Next Prime: 68389

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 2 ² × 5 × 13 × 263

Divisors: 1, 2, 4, 5, 10, 13, 20, 26, 52, 65

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10000101100011100

Octal: 205434

Duodecimal: 336A4

Hexadecimal: 10b1c

Square: 4675824400

Square Root: 261.4956978613606

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) = C(n+2, 2) + C(n+2, 3) + C(n+2, 4) + C(n+2, 5). A27660

Least integer k > 1 such that π(k)² + π(k·n)² is a square, where π(.) is the prime-counting function given by A000720. A255677

a(n) = n*(2·n² + 5·n + 19)/2. A163675

Engel expansion of sinh(1/3). A68380