190297728 has 256 divisors, whose sum is σ = 616896000. Its totient is φ = 57507840.

The previous prime is 190297721. The next prime is 190297729. The reversal of 190297728 is 827792091.

190297728 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (190297721) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2408793 + ... + 2408871.

It is an arithmetic number, because the mean of its divisors is an integer number (2409750).

Almost surely, 2^190297728 is an apocalyptic number.

190297728 is a gapful number since it is divisible by the number (18) 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 190297728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (308448000).

190297728 is an abundant number, since it is smaller than the sum of its proper divisors (426598272).

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

190297728 is a wasteful number, since it uses less digits than its factorization.

190297728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160 (or 142 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 45.

The square root of 190297728 is about 13794.8442542857. The cubic root of 190297728 is about 575.1898332249.

The spelling of 190297728 in words is "one hundred ninety million, two hundred ninety-seven thousand, seven hundred twenty-eight".