Properties of the Number 392

Three Hundred Ninety-Two

Basics

Value: 391 → 392 → 393

Parity: even

Prime: No

Previous Prime: 389

Next Prime: 397

Digit Sum: 14

Digital Root: 5

Palindrome: No

Factorization: 2 ³ × 7 ²

Divisors: 1, 2, 4, 7, 8, 14, 28, 49, 56, 98

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110001000

Octal: 610

Duodecimal: 288

Hexadecimal: 188

Square: 153664

Square Root: 19.79898987322333

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

Powerful numbers, definition (1): if a prime p divides n then p² must also divide n (also called squareful, square full, square-full or 2-powerful numbers). A1694

Generalized pentagonal numbers: m*(3·m - 1)/2, m = 0, +-1, +-2, +-3, .... A1318

a(n) = 2·n². A1105

Number of partitions of n into an even number of parts. A27187

Squares and twice squares. A28982

Powerful numbers (A001694) that are not prime powers (A000961). A286708

Second pentagonal numbers: a(n) = n*(3·n + 1)/2. A5449

a(n) = ceiling(n²/2). A982

Numbers that are products of 5 primes (or 5-almost primes, a generalization of semiprimes). A14614

a(n) = floor(n²/2). A7590