397474905528 has 48 divisors (see below), whose sum is σ = 1077943529520. Its totient is φ = 132313297536.

The previous prime is 397474905523. The next prime is 397474905623. The reversal of 397474905528 is 825509474793.

397474905528 is a `hidden beast` number, since 3 + 9 + 7 + 4 + 74 + 9 + 0 + 552 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397474905523) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3661501 + ... + 3768492.

It is an arithmetic number, because the mean of its divisors is an integer number (22457156865).

Almost surely, 2^397474905528 is an apocalyptic number.

It is an amenable number.

397474905528 is an abundant number, since it is smaller than the sum of its proper divisors (680468623992).

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

397474905528 is a wasteful number, since it uses less digits than its factorization.

397474905528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7430748 (or 7430741 counting only the distinct ones).

The product of its (nonzero) digits is 76204800, while the sum is 63.

The spelling of 397474905528 in words is "three hundred ninety-seven billion, four hundred seventy-four million, nine hundred five thousand, five hundred twenty-eight".