397692028 has 12 divisors (see below), whose sum is σ = 705495280. Its totient is φ = 196121952.

The previous prime is 397692023. The next prime is 397692041. The reversal of 397692028 is 820296793.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397692023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 680688 + ... + 681271.

Almost surely, 2^397692028 is an apocalyptic number.

It is an amenable number.

397692028 is a deficient number, since it is larger than the sum of its proper divisors (307803252).

397692028 is a wasteful number, since it uses less digits than its factorization.

397692028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1362036 (or 1362034 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 46.

The square root of 397692028 is about 19942.2172287838. The cubic root of 397692028 is about 735.3864584973.

The spelling of 397692028 in words is "three hundred ninety-seven million, six hundred ninety-two thousand, twenty-eight".