728944814 has 16 divisors (see below), whose sum is σ = 1181325600. Its totient is φ = 335350560.

The previous prime is 728944789. The next prime is 728944829. The reversal of 728944814 is 418449827.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36989 + ... + 53160.

It is an arithmetic number, because the mean of its divisors is an integer number (73832850).

Almost surely, 2^728944814 is an apocalyptic number.

728944814 is a deficient number, since it is larger than the sum of its proper divisors (452380786).

728944814 is a wasteful number, since it uses less digits than its factorization.

728944814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90475.

The product of its digits is 516096, while the sum is 47.

The square root of 728944814 is about 26998.9780176954. The cubic root of 728944814 is about 899.9772891388.

The spelling of 728944814 in words is "seven hundred twenty-eight million, nine hundred forty-four thousand, eight hundred fourteen".