389251632 has 320 divisors, whose sum is σ = 1382768640. Its totient is φ = 91238400.

The previous prime is 389251627. The next prime is 389251633. The reversal of 389251632 is 236152983.

It is not an unprimeable number, because it can be changed into a prime (389251633) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1615032 + ... + 1615272.

It is an arithmetic number, because the mean of its divisors is an integer number (4321152).

Almost surely, 2^389251632 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 389251632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (691384320).

389251632 is an abundant number, since it is smaller than the sum of its proper divisors (993517008).

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

389251632 is a wasteful number, since it uses less digits than its factorization.

389251632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312 (or 306 counting only the distinct ones).

The product of its digits is 77760, while the sum is 39.

The square root of 389251632 is about 19729.4610164596. The cubic root of 389251632 is about 730.1467347493.

The spelling of 389251632 in words is "three hundred eighty-nine million, two hundred fifty-one thousand, six hundred thirty-two".