190729728 has 280 divisors, whose sum is σ = 661938288. Its totient is φ = 53747712.

The previous prime is 190729727. The next prime is 190729751. The reversal of 190729728 is 827927091.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190729727) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 2612700 + ... + 2612772.

Almost surely, 2^190729728 is an apocalyptic number.

190729728 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 190729728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (330969144).

190729728 is an abundant number, since it is smaller than the sum of its proper divisors (471208560).

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

190729728 is an frugal number, since it uses more digits than its factorization.

190729728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116 (or 85 counting only the distinct ones).

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

The square root of 190729728 is about 13810.4934017580. The cubic root of 190729728 is about 575.6247555941.

The spelling of 190729728 in words is "one hundred ninety million, seven hundred twenty-nine thousand, seven hundred twenty-eight".