728525194 has 8 divisors (see below), whose sum is σ = 1092978720. Its totient is φ = 364198956.

The previous prime is 728525177. The next prime is 728525197. The reversal of 728525194 is 491525827.

728525194 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 728525194.

It is not an unprimeable number, because it can be changed into a prime (728525197) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15924 + ... + 41359.

It is an arithmetic number, because the mean of its divisors is an integer number (136622340).

Almost surely, 2^728525194 is an apocalyptic number.

728525194 is a deficient number, since it is larger than the sum of its proper divisors (364453526).

728525194 is a wasteful number, since it uses less digits than its factorization.

728525194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63644.

The product of its digits is 201600, while the sum is 43.

The square root of 728525194 is about 26991.2058641329. The cubic root of 728525194 is about 899.8045641484.

The spelling of 728525194 in words is "seven hundred twenty-eight million, five hundred twenty-five thousand, one hundred ninety-four".