728182128 has 20 divisors (see below), whose sum is σ = 1881137288. Its totient is φ = 242727360.

The previous prime is 728182123. The next prime is 728182129. The reversal of 728182128 is 821281827.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728182123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7585183 + ... + 7585278.

Almost surely, 2^728182128 is an apocalyptic number.

It is an amenable number.

728182128 is an abundant number, since it is smaller than the sum of its proper divisors (1152955160).

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

728182128 is a wasteful number, since it uses less digits than its factorization.

728182128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15170472 (or 15170466 counting only the distinct ones).

The product of its digits is 28672, while the sum is 39.

The square root of 728182128 is about 26984.8499717897. The cubic root of 728182128 is about 899.6633012139.

The spelling of 728182128 in words is "seven hundred twenty-eight million, one hundred eighty-two thousand, one hundred twenty-eight".