189238040 has 16 divisors (see below), whose sum is σ = 425785680. Its totient is φ = 75695200.

The previous prime is 189238039. The next prime is 189238057. The reversal of 189238040 is 40832981.

It is a happy number.

189238040 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×189238040² = 71622071566083200, which contains 22 as substring.

It is a zygodrome in base 7.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2365436 + ... + 2365515.

It is an arithmetic number, because the mean of its divisors is an integer number (26611605).

Almost surely, 2^189238040 is an apocalyptic number.

189238040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

189238040 is an abundant number, since it is smaller than the sum of its proper divisors (236547640).

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

189238040 is a wasteful number, since it uses less digits than its factorization.

189238040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4730962 (or 4730958 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 189238040 is about 13756.3817917358. The cubic root of 189238040 is about 574.1201818709.

The spelling of 189238040 in words is "one hundred eighty-nine million, two hundred thirty-eight thousand, forty".