394536020 has 24 divisors (see below), whose sum is σ = 864549504. Its totient is φ = 150952736.

The previous prime is 394536013. The next prime is 394536047. The reversal of 394536020 is 20635493.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 428384 + ... + 429303.

It is an arithmetic number, because the mean of its divisors is an integer number (36022896).

Almost surely, 2^394536020 is an apocalyptic number.

It is an amenable number.

394536020 is an abundant number, since it is smaller than the sum of its proper divisors (470013484).

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

394536020 is a wasteful number, since it uses less digits than its factorization.

394536020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 857719 (or 857717 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 32.

The square root of 394536020 is about 19862.9308008662. The cubic root of 394536020 is about 733.4359943512.

The spelling of 394536020 in words is "three hundred ninety-four million, five hundred thirty-six thousand, twenty".