728788522 has 16 divisors (see below), whose sum is σ = 1362929472. Its totient is φ = 283943520.

The previous prime is 728788493. The next prime is 728788523. The reversal of 728788522 is 225887827.

728788522 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×728788522² = 1062265419597888968, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (728788523) 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, 2366043 + ... + 2366350.

It is an arithmetic number, because the mean of its divisors is an integer number (85183092).

Almost surely, 2^728788522 is an apocalyptic number.

728788522 is a deficient number, since it is larger than the sum of its proper divisors (634140950).

728788522 is a wasteful number, since it uses less digits than its factorization.

728788522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4732413.

The product of its digits is 1003520, while the sum is 49.

The square root of 728788522 is about 26996.0834566794. The cubic root of 728788522 is about 899.9129635997.

The spelling of 728788522 in words is "seven hundred twenty-eight million, seven hundred eighty-eight thousand, five hundred twenty-two".