394818620 has 48 divisors (see below), whose sum is σ = 949767168. Its totient is φ = 135051840.

The previous prime is 394818607. The next prime is 394818631. The reversal of 394818620 is 26818493.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61775 + ... + 67865.

It is an arithmetic number, because the mean of its divisors is an integer number (19786816).

Almost surely, 2^394818620 is an apocalyptic number.

It is an amenable number.

394818620 is an abundant number, since it is smaller than the sum of its proper divisors (554948548).

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

394818620 is a wasteful number, since it uses less digits than its factorization.

394818620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6570 (or 6568 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 41.

The square root of 394818620 is about 19870.0432812815. The cubic root of 394818620 is about 733.6110688128.

The spelling of 394818620 in words is "three hundred ninety-four million, eight hundred eighteen thousand, six hundred twenty".