189722712 has 16 divisors (see below), whose sum is σ = 474306840. Its totient is φ = 63240896.

The previous prime is 189722711. The next prime is 189722723. The reversal of 189722712 is 217227981.

189722712 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189722711) 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, 3952533 + ... + 3952580.

Almost surely, 2^189722712 is an apocalyptic number.

189722712 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

189722712 is an abundant number, since it is smaller than the sum of its proper divisors (284584128).

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

189722712 is a wasteful number, since it uses less digits than its factorization.

189722712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7905122 (or 7905118 counting only the distinct ones).

The product of its digits is 28224, while the sum is 39.

The square root of 189722712 is about 13773.9867866932. The cubic root of 189722712 is about 574.6099050375.

The spelling of 189722712 in words is "one hundred eighty-nine million, seven hundred twenty-two thousand, seven hundred twelve".