389581824 has 88 divisors (see below), whose sum is σ = 1074429360. Its totient is φ = 125353984.

The previous prime is 389581823. The next prime is 389581837. The reversal of 389581824 is 428185983.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (389581823) 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, 86902 + ... + 91274.

Almost surely, 2^389581824 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 389581824, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (537214680).

389581824 is an abundant number, since it is smaller than the sum of its proper divisors (684847536).

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

389581824 is a wasteful number, since it uses less digits than its factorization.

389581824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4425 (or 4407 counting only the distinct ones).

The product of its digits is 552960, while the sum is 48.

The square root of 389581824 is about 19737.8272360460. The cubic root of 389581824 is about 730.3531312062.

The spelling of 389581824 in words is "three hundred eighty-nine million, five hundred eighty-one thousand, eight hundred twenty-four".