190728734 has 12 divisors (see below), whose sum is σ = 327052152. Its totient is φ = 81718740.

The previous prime is 190728721. The next prime is 190728749. The reversal of 190728734 is 437827091.

190728734 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 190728691 and 190728700.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 49829 + ... + 53519.

It is an arithmetic number, because the mean of its divisors is an integer number (27254346).

Almost surely, 2^190728734 is an apocalyptic number.

190728734 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

190728734 is a deficient number, since it is larger than the sum of its proper divisors (136323418).

190728734 is an frugal number, since it uses more digits than its factorization.

190728734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7391 (or 3700 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 41.

The square root of 190728734 is about 13810.4574145826. The cubic root of 190728734 is about 575.6237556242.

The spelling of 190728734 in words is "one hundred ninety million, seven hundred twenty-eight thousand, seven hundred thirty-four".