396728 has 16 divisors (see below), whose sum is σ = 752760. Its totient is φ = 196000.

The previous prime is 396719. The next prime is 396733. The reversal of 396728 is 827693.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 563 + ... + 1053.

2³⁹⁶⁷²⁸ is an apocalyptic number.

It is an amenable number.

396728 is a deficient number, since it is larger than the sum of its proper divisors (356032).

396728 is a wasteful number, since it uses less digits than its factorization.

396728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 598 (or 594 counting only the distinct ones).

The product of its digits is 18144, while the sum is 35.

The square root of 396728 is about 629.8634772711. The cubic root of 396728 is about 73.4791771578.

Subtracting from 396728 its sum of digits (35), we obtain a palindrome (396693).

The spelling of 396728 in words is "three hundred ninety-six thousand, seven hundred twenty-eight".