394073328 has 160 divisors (see below), whose sum is σ = 1204422912. Its totient is φ = 109670400.

The previous prime is 394073327. The next prime is 394073341. The reversal of 394073328 is 823370493.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394073327) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 385458 + ... + 386478.

Almost surely, 2^394073328 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 394073328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (602211456).

394073328 is an abundant number, since it is smaller than the sum of its proper divisors (810349584).

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

394073328 is a wasteful number, since it uses less digits than its factorization.

394073328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1103 (or 1097 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 39.

The square root of 394073328 is about 19851.2802609807. The cubic root of 394073328 is about 733.1491699162.

The spelling of 394073328 in words is "three hundred ninety-four million, seventy-three thousand, three hundred twenty-eight".