394958028 has 18 divisors (see below), whose sum is σ = 921729396. Its totient is φ = 131629728.

The previous prime is 394958021. The next prime is 394958063. The reversal of 394958028 is 820859493.

It is not an unprimeable number, because it can be changed into a prime (394958021) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 65976 + ... + 71712.

Almost surely, 2^394958028 is an apocalyptic number.

It is an amenable number.

394958028 is an abundant number, since it is smaller than the sum of its proper divisors (526771368).

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

394958028 is an frugal number, since it uses more digits than its factorization.

394958028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11481 (or 5742 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 48.

The square root of 394958028 is about 19873.5509660453. The cubic root of 394958028 is about 733.6974031546.

Multiplying 394958028 by its sum of digits (48), we get a square (18957985344 = 137688²).

The spelling of 394958028 in words is "three hundred ninety-four million, nine hundred fifty-eight thousand, twenty-eight".