189723672 has 48 divisors (see below), whose sum is σ = 544064040. Its totient is φ = 59520768.

The previous prime is 189723661. The next prime is 189723673. The reversal of 189723672 is 276327981.

189723672 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 (189723673) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 76278 + ... + 78725.

Almost surely, 2^189723672 is an apocalyptic number.

189723672 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

189723672 is an abundant number, since it is smaller than the sum of its proper divisors (354340368).

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

189723672 is a wasteful number, since it uses less digits than its factorization.

189723672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155032 (or 155025 counting only the distinct ones).

The product of its digits is 254016, while the sum is 45.

The square root of 189723672 is about 13774.0216349474. The cubic root of 189723672 is about 574.6108742143.

The spelling of 189723672 in words is "one hundred eighty-nine million, seven hundred twenty-three thousand, six hundred seventy-two".