728188912 has 20 divisors (see below), whose sum is σ = 1539126936. Its totient is φ = 330994880.

The previous prime is 728188873. The next prime is 728188969. The reversal of 728188912 is 219881827.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2068543 + ... + 2068894.

Almost surely, 2^728188912 is an apocalyptic number.

It is an amenable number.

728188912 is an abundant number, since it is smaller than the sum of its proper divisors (810938024).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

728188912 is a wasteful number, since it uses less digits than its factorization.

728188912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4137456 (or 4137450 counting only the distinct ones).

The product of its digits is 129024, while the sum is 46.

The square root of 728188912 is about 26984.9756716585. The cubic root of 728188912 is about 899.6660950648. Note that the first 3 decimals are identical.

The spelling of 728188912 in words is "seven hundred twenty-eight million, one hundred eighty-eight thousand, nine hundred twelve".