394857428 has 12 divisors (see below), whose sum is σ = 789714912. Its totient is φ = 169224600.

The previous prime is 394857413. The next prime is 394857461. The reversal of 394857428 is 824758493.

394857428 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7050998 + ... + 7051053.

It is an arithmetic number, because the mean of its divisors is an integer number (65809576).

Almost surely, 2^394857428 is an apocalyptic number.

It is an amenable number.

394857428 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

394857428 is a wasteful number, since it uses less digits than its factorization.

394857428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14102062 (or 14102060 counting only the distinct ones).

The product of its digits is 1935360, while the sum is 50.

The square root of 394857428 is about 19871.0198027177. The cubic root of 394857428 is about 733.6351043607.

The spelling of 394857428 in words is "three hundred ninety-four million, eight hundred fifty-seven thousand, four hundred twenty-eight".