382389640 has 32 divisors (see below), whose sum is σ = 864898560. Its totient is φ = 152152000.

The previous prime is 382389629. The next prime is 382389643. The reversal of 382389640 is 46983283.

It is not an unprimeable number, because it can be changed into a prime (382389643) 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, 17386 + ... + 32665.

It is an arithmetic number, because the mean of its divisors is an integer number (27028080).

Almost surely, 2^382389640 is an apocalyptic number.

It is an amenable number.

382389640 is an abundant number, since it is smaller than the sum of its proper divisors (482508920).

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

382389640 is a wasteful number, since it uses less digits than its factorization.

382389640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50253 (or 50249 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 43.

The square root of 382389640 is about 19554.7856035294. The cubic root of 382389640 is about 725.8307654723.

The spelling of 382389640 in words is "three hundred eighty-two million, three hundred eighty-nine thousand, six hundred forty".