397346928 has 80 divisors (see below), whose sum is σ = 1131034752. Its totient is φ = 119200000.

The previous prime is 397346921. The next prime is 397346953. The reversal of 397346928 is 829643793.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397346921) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49603 + ... + 57053.

Almost surely, 2^397346928 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 397346928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (565517376).

397346928 is an abundant number, since it is smaller than the sum of its proper divisors (733687824).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

397346928 is a wasteful number, since it uses less digits than its factorization.

397346928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7574 (or 7568 counting only the distinct ones).

The product of its digits is 1959552, while the sum is 51.

The square root of 397346928 is about 19933.5628526363. The cubic root of 397346928 is about 735.1736847165.

The spelling of 397346928 in words is "three hundred ninety-seven million, three hundred forty-six thousand, nine hundred twenty-eight".