397306168 has 64 divisors (see below), whose sum is σ = 890265600. Its totient is φ = 162639360.

The previous prime is 397306159. The next prime is 397306171. The reversal of 397306168 is 861603793.

It is a super-2 number, since 2×397306168² = 315704382261688448, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135696 + ... + 138592.

It is an arithmetic number, because the mean of its divisors is an integer number (13910400).

Almost surely, 2^397306168 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 397306168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (445132800).

397306168 is an abundant number, since it is smaller than the sum of its proper divisors (492959432).

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

397306168 is a wasteful number, since it uses less digits than its factorization.

397306168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3020 (or 3016 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 43.

The square root of 397306168 is about 19932.5404301609. The cubic root of 397306168 is about 735.1485457242.

The spelling of 397306168 in words is "three hundred ninety-seven million, three hundred six thousand, one hundred sixty-eight".