389187072 has 160 divisors (see below), whose sum is σ = 1178496000. Its totient is φ = 126756864.

The previous prime is 389187067. The next prime is 389187157. The reversal of 389187072 is 270781983.

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, 649429 + ... + 650027.

It is an arithmetic number, because the mean of its divisors is an integer number (7365600).

Almost surely, 2^389187072 is an apocalyptic number.

389187072 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 389187072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (589248000).

389187072 is an abundant number, since it is smaller than the sum of its proper divisors (789308928).

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

389187072 is an equidigital number, since it uses as much as digits as its factorization.

389187072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 673 (or 651 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 45.

The square root of 389187072 is about 19727.8248167404. The cubic root of 389187072 is about 730.1063659359.

The spelling of 389187072 in words is "three hundred eighty-nine million, one hundred eighty-seven thousand, seventy-two".