728031699 has 8 divisors (see below), whose sum is σ = 1078565520. Its totient is φ = 485354448.

The previous prime is 728031697. The next prime is 728031743. The reversal of 728031699 is 996130827.

It is not a de Polignac number, because 728031699 - 2¹ = 728031697 is a prime.

It is not an unprimeable number, because it can be changed into a prime (728031697) 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, 13482042 + ... + 13482095.

It is an arithmetic number, because the mean of its divisors is an integer number (134820690).

Almost surely, 2^728031699 is an apocalyptic number.

728031699 is a deficient number, since it is larger than the sum of its proper divisors (350533821).

728031699 is a wasteful number, since it uses less digits than its factorization.

728031699 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26964146 (or 26964140 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The square root of 728031699 is about 26982.0625416220. The cubic root of 728031699 is about 899.6013456647.

The spelling of 728031699 in words is "seven hundred twenty-eight million, thirty-one thousand, six hundred ninety-nine".