726716128 has 24 divisors (see below), whose sum is σ = 1447965288. Its totient is φ = 358978944.

The previous prime is 726716099. The next prime is 726716129. The reversal of 726716128 is 821617627.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (726716129) 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, 134151 + ... + 139462.

It is an arithmetic number, because the mean of its divisors is an integer number (60331887).

Almost surely, 2^726716128 is an apocalyptic number.

It is an amenable number.

726716128 is a deficient number, since it is larger than the sum of its proper divisors (721249160).

726716128 is a wasteful number, since it uses less digits than its factorization.

726716128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273706 (or 273698 counting only the distinct ones).

The product of its digits is 56448, while the sum is 40.

The square root of 726716128 is about 26957.6728965985. The cubic root of 726716128 is about 899.0591517717.

The spelling of 726716128 in words is "seven hundred twenty-six million, seven hundred sixteen thousand, one hundred twenty-eight".