397398528 has 320 divisors, whose sum is σ = 1325808000. Its totient is φ = 116785152.

The previous prime is 397398499. The next prime is 397398581. The reversal of 397398528 is 825893793.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4465108 + ... + 4465196.

It is an arithmetic number, because the mean of its divisors is an integer number (4143150).

Almost surely, 2^397398528 is an apocalyptic number.

397398528 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 397398528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (662904000).

397398528 is an abundant number, since it is smaller than the sum of its proper divisors (928409472).

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

397398528 is a wasteful number, since it uses less digits than its factorization.

397398528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152 (or 130 counting only the distinct ones).

The product of its digits is 3265920, while the sum is 54.

The square root of 397398528 is about 19934.8571100974. The cubic root of 397398528 is about 735.2055068829.

The spelling of 397398528 in words is "three hundred ninety-seven million, three hundred ninety-eight thousand, five hundred twenty-eight".