188739072 has 240 divisors, whose sum is σ = 594305712. Its totient is φ = 59719680.

The previous prime is 188739043. The next prime is 188739077. The reversal of 188739072 is 270937881.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (188739077) 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, 4603372 + ... + 4603412.

Almost surely, 2^188739072 is an apocalyptic number.

188739072 is a gapful number since it is divisible by the number (12) 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 188739072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (297152856).

188739072 is an abundant number, since it is smaller than the sum of its proper divisors (405566640).

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

188739072 is an frugal number, since it uses more digits than its factorization.

188739072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111 (or 83 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 45.

The square root of 188739072 is about 13738.2339476368. The cubic root of 188739072 is about 573.6151393914.

The spelling of 188739072 in words is "one hundred eighty-eight million, seven hundred thirty-nine thousand, seventy-two".