728665260522 has 16 divisors (see below), whose sum is σ = 1457369420832. Its totient is φ = 242881936880.

The previous prime is 728665260469. The next prime is 728665260529. The reversal of 728665260522 is 225062566827.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (728665260529) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1374429 + ... + 1829312.

It is an arithmetic number, because the mean of its divisors is an integer number (91085588802).

Almost surely, 2^728665260522 is an apocalyptic number.

728665260522 is an abundant number, since it is smaller than the sum of its proper divisors (728704160310).

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

728665260522 is a wasteful number, since it uses less digits than its factorization.

728665260522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3241653.

The product of its (nonzero) digits is 4838400, while the sum is 51.

The spelling of 728665260522 in words is "seven hundred twenty-eight billion, six hundred sixty-five million, two hundred sixty thousand, five hundred twenty-two".