397157324 has 48 divisors (see below), whose sum is σ = 729025920. Its totient is φ = 189164160.

The previous prime is 397157317. The next prime is 397157359. The reversal of 397157324 is 423751793.

It is a Harshad number since it is a multiple of its sum of digits (41).

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, 2218667 + ... + 2218845.

It is an arithmetic number, because the mean of its divisors is an integer number (15188040).

Almost surely, 2^397157324 is an apocalyptic number.

It is an amenable number.

397157324 is a deficient number, since it is larger than the sum of its proper divisors (331868596).

397157324 is a wasteful number, since it uses less digits than its factorization.

397157324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 470 (or 468 counting only the distinct ones).

The product of its digits is 158760, while the sum is 41.

The square root of 397157324 is about 19928.8063867358. The cubic root of 397157324 is about 735.0567306236.

The spelling of 397157324 in words is "three hundred ninety-seven million, one hundred fifty-seven thousand, three hundred twenty-four".