389636532 has 72 divisors (see below), whose sum is σ = 1056182400. Its totient is φ = 120676608.

The previous prime is 389636519. The next prime is 389636561. The reversal of 389636532 is 235636983.

389636532 is a `hidden beast` number, since 3 + 8 + 9 + 636 + 5 + 3 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44319 + ... + 52377.

It is an arithmetic number, because the mean of its divisors is an integer number (14669200).

Almost surely, 2^389636532 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 389636532, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (528091200).

389636532 is an abundant number, since it is smaller than the sum of its proper divisors (666545868).

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

389636532 is a wasteful number, since it uses less digits than its factorization.

389636532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8165 (or 8160 counting only the distinct ones).

The product of its digits is 699840, while the sum is 45.

The square root of 389636532 is about 19739.2130542228. The cubic root of 389636532 is about 730.3873168265.

The spelling of 389636532 in words is "three hundred eighty-nine million, six hundred thirty-six thousand, five hundred thirty-two".