728528522 has 8 divisors (see below), whose sum is σ = 1093995072. Its totient is φ = 363863500.

The previous prime is 728528509. The next prime is 728528527. The reversal of 728528522 is 225825827.

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 728528522.

It is not an unprimeable number, because it can be changed into a prime (728528527) 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, 198104 + ... + 201747.

It is an arithmetic number, because the mean of its divisors is an integer number (136749384).

Almost surely, 2^728528522 is an apocalyptic number.

728528522 is a deficient number, since it is larger than the sum of its proper divisors (365466550).

728528522 is a wasteful number, since it uses less digits than its factorization.

728528522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400764.

The product of its digits is 179200, while the sum is 41.

The square root of 728528522 is about 26991.2675137719. The cubic root of 728528522 is about 899.8059342886.

The spelling of 728528522 in words is "seven hundred twenty-eight million, five hundred twenty-eight thousand, five hundred twenty-two".