189152772 has 12 divisors (see below), whose sum is σ = 441356496. Its totient is φ = 63050920.

The previous prime is 189152753. The next prime is 189152773. The reversal of 189152772 is 277251981.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (189152773) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7881354 + ... + 7881377.

It is an arithmetic number, because the mean of its divisors is an integer number (36779708).

Almost surely, 2^189152772 is an apocalyptic number.

189152772 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

189152772 is an abundant number, since it is smaller than the sum of its proper divisors (252203724).

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

189152772 is a wasteful number, since it uses less digits than its factorization.

189152772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15762738 (or 15762736 counting only the distinct ones).

The product of its digits is 70560, while the sum is 42.

The square root of 189152772 is about 13753.2822264360. The cubic root of 189152772 is about 574.0339387558.

The spelling of 189152772 in words is "one hundred eighty-nine million, one hundred fifty-two thousand, seven hundred seventy-two".