397728024 has 32 divisors (see below), whose sum is σ = 995466240. Its totient is φ = 132423200.

The previous prime is 397727951. The next prime is 397728043. The reversal of 397728024 is 420827793.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12769 + ... + 30959.

It is an arithmetic number, because the mean of its divisors is an integer number (31108320).

Almost surely, 2^397728024 is an apocalyptic number.

It is an amenable number.

397728024 is an abundant number, since it is smaller than the sum of its proper divisors (597738216).

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

397728024 is a wasteful number, since it uses less digits than its factorization.

397728024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19111 (or 19107 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 42.

The square root of 397728024 is about 19943.1197158318. The cubic root of 397728024 is about 735.4086449888.

The spelling of 397728024 in words is "three hundred ninety-seven million, seven hundred twenty-eight thousand, twenty-four".