394285828 has 24 divisors (see below), whose sum is σ = 732564000. Its totient is φ = 185044608.

The previous prime is 394285823. The next prime is 394285873. The reversal of 394285828 is 828582493.

It is a happy number.

It is a super-2 number, since 2×394285828² = 310922628323291168, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (394285823) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18123 + ... + 33421.

It is an arithmetic number, because the mean of its divisors is an integer number (30523500).

Almost surely, 2^394285828 is an apocalyptic number.

It is an amenable number.

394285828 is a deficient number, since it is larger than the sum of its proper divisors (338278172).

394285828 is a wasteful number, since it uses less digits than its factorization.

394285828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15699 (or 15697 counting only the distinct ones).

The product of its digits is 1105920, while the sum is 49.

The square root of 394285828 is about 19856.6318392622. The cubic root of 394285828 is about 733.2809272927.

The spelling of 394285828 in words is "three hundred ninety-four million, two hundred eighty-five thousand, eight hundred twenty-eight".