397275628 has 12 divisors (see below), whose sum is σ = 695373840. Its totient is φ = 198597392.

The previous prime is 397275583. The next prime is 397275689. The reversal of 397275628 is 826572793.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27825 + ... + 39607.

It is an arithmetic number, because the mean of its divisors is an integer number (57947820).

Almost surely, 2^397275628 is an apocalyptic number.

It is an amenable number.

397275628 is a deficient number, since it is larger than the sum of its proper divisors (298098212).

397275628 is a wasteful number, since it uses less digits than its factorization.

397275628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20216 (or 20214 counting only the distinct ones).

The product of its digits is 1270080, while the sum is 49.

The square root of 397275628 is about 19931.7743314538. The cubic root of 397275628 is about 735.1297088559.

The spelling of 397275628 in words is "three hundred ninety-seven million, two hundred seventy-five thousand, six hundred twenty-eight".