397052304 has 120 divisors (see below), whose sum is σ = 1137948000. Its totient is φ = 119201280.

The previous prime is 397052269. The next prime is 397052317. The reversal of 397052304 is 403250793.

It is a happy number.

It is a super-2 number, since 2×397052304² = 315301064223416832, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 795447 + ... + 795945.

It is an arithmetic number, because the mean of its divisors is an integer number (9482900).

Almost surely, 2^397052304 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 397052304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (568974000).

397052304 is an abundant number, since it is smaller than the sum of its proper divisors (740895696).

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

397052304 is a wasteful number, since it uses less digits than its factorization.

397052304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 669 (or 652 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 33.

The square root of 397052304 is about 19926.1713331990. The cubic root of 397052304 is about 734.9919347535.

The spelling of 397052304 in words is "three hundred ninety-seven million, fifty-two thousand, three hundred four".