727296728 has 8 divisors (see below), whose sum is σ = 1363681380. Its totient is φ = 363648360.

The previous prime is 727296727. The next prime is 727296733. The reversal of 727296728 is 827692727.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (727296721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45456038 + ... + 45456053.

Almost surely, 2^727296728 is an apocalyptic number.

It is an amenable number.

727296728 is a deficient number, since it is larger than the sum of its proper divisors (636384652).

727296728 is a wasteful number, since it uses less digits than its factorization.

727296728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90912097 (or 90912093 counting only the distinct ones).

The product of its digits is 1185408, while the sum is 50.

The square root of 727296728 is about 26968.4394802517. The cubic root of 727296728 is about 899.2985184110.

The spelling of 727296728 in words is "seven hundred twenty-seven million, two hundred ninety-six thousand, seven hundred twenty-eight".