728893131 has 16 divisors (see below), whose sum is σ = 980851200. Its totient is φ = 481451040.

The previous prime is 728893103. The next prime is 728893177. The reversal of 728893131 is 131398827.

728893131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 728893131 - 2¹⁴ = 728876747 is a prime.

It is a super-2 number, since 2×728893131² = 1062570392837966322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (728893631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 168526 + ... + 172796.

It is an arithmetic number, because the mean of its divisors is an integer number (61303200).

Almost surely, 2^728893131 is an apocalyptic number.

728893131 is a deficient number, since it is larger than the sum of its proper divisors (251958069).

728893131 is a wasteful number, since it uses less digits than its factorization.

728893131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4786.

The product of its digits is 72576, while the sum is 42.

The square root of 728893131 is about 26998.0208719084. The cubic root of 728893131 is about 899.9560188384.

The spelling of 728893131 in words is "seven hundred twenty-eight million, eight hundred ninety-three thousand, one hundred thirty-one".