189752940 has 144 divisors (see below), whose sum is σ = 627969888. Its totient is φ = 46098432.

The previous prime is 189752939. The next prime is 189752951. The reversal of 189752940 is 49257981.

189752940 is a `hidden beast` number, since 1 + 89 + 7 + 529 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 193732 + ... + 194708.

It is an arithmetic number, because the mean of its divisors is an integer number (4360902).

Almost surely, 2^189752940 is an apocalyptic number.

189752940 is a gapful number since it is divisible by the number (10) 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 189752940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (313984944).

189752940 is an abundant number, since it is smaller than the sum of its proper divisors (438216948).

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

189752940 is a wasteful number, since it uses less digits than its factorization.

189752940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1088 (or 1083 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 45.

The square root of 189752940 is about 13775.0840287818. The cubic root of 189752940 is about 574.6404204243.

The spelling of 189752940 in words is "one hundred eighty-nine million, seven hundred fifty-two thousand, nine hundred forty".