189413728 has 48 divisors (see below), whose sum is σ = 451259424. Its totient is φ = 76400640.

The previous prime is 189413699. The next prime is 189413737. The reversal of 189413728 is 827314981.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21063 + ... + 28678.

It is an arithmetic number, because the mean of its divisors is an integer number (9401238).

Almost surely, 2^189413728 is an apocalyptic number.

It is an amenable number.

189413728 is an abundant number, since it is smaller than the sum of its proper divisors (261845696).

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

189413728 is a wasteful number, since it uses less digits than its factorization.

189413728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49775 (or 49767 counting only the distinct ones).

The product of its digits is 96768, while the sum is 43.

The square root of 189413728 is about 13762.7660010624. The cubic root of 189413728 is about 574.2977973722.

The spelling of 189413728 in words is "one hundred eighty-nine million, four hundred thirteen thousand, seven hundred twenty-eight".