394306304 has 72 divisors (see below), whose sum is σ = 906554880. Its totient is φ = 167666688.

The previous prime is 394306219. The next prime is 394306331. The reversal of 394306304 is 403603493.

It is a happy number.

It is a super-2 number, since 2×394306304² = 310954922748280832, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 248297 + ... + 249879.

It is an arithmetic number, because the mean of its divisors is an integer number (12591040).

Almost surely, 2^394306304 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 394306304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (453277440).

394306304 is an abundant number, since it is smaller than the sum of its proper divisors (512248576).

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

394306304 is a wasteful number, since it uses less digits than its factorization.

394306304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1745 (or 1731 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 32.

The square root of 394306304 is about 19857.1474285709. The cubic root of 394306304 is about 733.2936206226.

Adding to 394306304 its reverse (403603493), we get a palindrome (797909797).

The spelling of 394306304 in words is "three hundred ninety-four million, three hundred six thousand, three hundred four".