728613642 has 32 divisors (see below), whose sum is σ = 1610036352. Its totient is φ = 218645504.

The previous prime is 728613637. The next prime is 728613667. The reversal of 728613642 is 246316827.

It is a happy number.

728613642 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 728613642.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 152943 + ... + 157634.

It is an arithmetic number, because the mean of its divisors is an integer number (50313636).

Almost surely, 2^728613642 is an apocalyptic number.

728613642 is an abundant number, since it is smaller than the sum of its proper divisors (881422710).

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

728613642 is a wasteful number, since it uses less digits than its factorization.

728613642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310622.

The product of its digits is 96768, while the sum is 39.

The square root of 728613642 is about 26992.8442739923. The cubic root of 728613642 is about 899.8409768417.

The spelling of 728613642 in words is "seven hundred twenty-eight million, six hundred thirteen thousand, six hundred forty-two".