189238368 has 48 divisors (see below), whose sum is σ = 541912896. Its totient is φ = 57344640.

The previous prime is 189238363. The next prime is 189238391. The reversal of 189238368 is 863832981.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×189238368² = 71622319846606848, which contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189238363) 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, 88546 + ... + 90657.

It is an arithmetic number, because the mean of its divisors is an integer number (11289852).

Almost surely, 2^189238368 is an apocalyptic number.

It is an amenable number.

189238368 is an abundant number, since it is smaller than the sum of its proper divisors (352674528).

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

189238368 is a wasteful number, since it uses less digits than its factorization.

189238368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179227 (or 179219 counting only the distinct ones).

The product of its digits is 497664, while the sum is 48.

The square root of 189238368 is about 13756.3937134701. The cubic root of 189238368 is about 574.1205135718.

The spelling of 189238368 in words is "one hundred eighty-nine million, two hundred thirty-eight thousand, three hundred sixty-eight".