728871296 has 32 divisors (see below), whose sum is σ = 1453418400. Its totient is φ = 364091904.

The previous prime is 728871271. The next prime is 728871307. The reversal of 728871296 is 692178827.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×728871296² = 1062506732265439232, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 184025 + ... + 187943.

It is an arithmetic number, because the mean of its divisors is an integer number (45419325).

Almost surely, 2^728871296 is an apocalyptic number.

It is an amenable number.

728871296 is a deficient number, since it is larger than the sum of its proper divisors (724547104).

728871296 is a wasteful number, since it uses less digits than its factorization.

728871296 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5386 (or 5374 counting only the distinct ones).

The product of its digits is 677376, while the sum is 50.

The square root of 728871296 is about 26997.6164873864. The cubic root of 728871296 is about 899.9470322737.

The spelling of 728871296 in words is "seven hundred twenty-eight million, eight hundred seventy-one thousand, two hundred ninety-six".