320857394 has 48 divisors (see below), whose sum is σ = 577368960. Its totient is φ = 132818400.

The previous prime is 320857387. The next prime is 320857417. The reversal of 320857394 is 493758023.

320857394 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 247889 + ... + 249179.

It is an arithmetic number, because the mean of its divisors is an integer number (12028520).

Almost surely, 2^320857394 is an apocalyptic number.

320857394 is a deficient number, since it is larger than the sum of its proper divisors (256511566).

320857394 is a wasteful number, since it uses less digits than its factorization.

320857394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1407 (or 1396 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 41.

The square root of 320857394 is about 17912.4926796915. The cubic root of 320857394 is about 684.6007185209.

The spelling of 320857394 in words is "three hundred twenty million, eight hundred fifty-seven thousand, three hundred ninety-four".