189245340 has 72 divisors (see below), whose sum is σ = 588068208. Its totient is φ = 49232640.

The previous prime is 189245321. The next prime is 189245341. The reversal of 189245340 is 43542981.

189245340 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 189245295 and 189245304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189245341) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5442 + ... + 20201.

It is an arithmetic number, because the mean of its divisors is an integer number (8167614).

Almost surely, 2^189245340 is an apocalyptic number.

189245340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

189245340 is an abundant number, since it is smaller than the sum of its proper divisors (398822868).

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

189245340 is a wasteful number, since it uses less digits than its factorization.

189245340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25699 (or 25694 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 189245340 is about 13756.6471205741. The cubic root of 189245340 is about 574.1275641488.

The spelling of 189245340 in words is "one hundred eighty-nine million, two hundred forty-five thousand, three hundred forty".