191242752 has 80 divisors (see below), whose sum is σ = 536379360. Its totient is φ = 60383232.

The previous prime is 191242729. The next prime is 191242757. The reversal of 191242752 is 257242191.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (191242757) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25908 + ... + 32460.

It is an arithmetic number, because the mean of its divisors is an integer number (6704742).

Almost surely, 2^191242752 is an apocalyptic number.

191242752 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 191242752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (268189680).

191242752 is an abundant number, since it is smaller than the sum of its proper divisors (345136608).

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

191242752 is an equidigital number, since it uses as much as digits as its factorization.

191242752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6593 (or 6577 counting only the distinct ones).

The product of its digits is 10080, while the sum is 33.

The square root of 191242752 is about 13829.0546314634. The cubic root of 191242752 is about 576.1403978745.

The spelling of 191242752 in words is "one hundred ninety-one million, two hundred forty-two thousand, seven hundred fifty-two".