397022064 has 80 divisors (see below), whose sum is σ = 1066598400. Its totient is φ = 127104768.

The previous prime is 397022057. The next prime is 397022083. The reversal of 397022064 is 460220793.

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, 309777 + ... + 311055.

It is an arithmetic number, because the mean of its divisors is an integer number (13332480).

Almost surely, 2^397022064 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 397022064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (533299200).

397022064 is an abundant number, since it is smaller than the sum of its proper divisors (669576336).

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

397022064 is a wasteful number, since it uses less digits than its factorization.

397022064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1542 (or 1536 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 33.

The square root of 397022064 is about 19925.4125176871. The cubic root of 397022064 is about 734.9732749781.

The spelling of 397022064 in words is "three hundred ninety-seven million, twenty-two thousand, sixty-four".