728185452 has 24 divisors (see below), whose sum is σ = 1702362816. Its totient is φ = 242262288.

The previous prime is 728185433. The next prime is 728185453. The reversal of 728185452 is 254581827.

It is not an unprimeable number, because it can be changed into a prime (728185453) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 51738 + ... + 64289.

It is an arithmetic number, because the mean of its divisors is an integer number (70931784).

Almost surely, 2^728185452 is an apocalyptic number.

It is an amenable number.

728185452 is an abundant number, since it is smaller than the sum of its proper divisors (974177364).

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

728185452 is a wasteful number, since it uses less digits than its factorization.

728185452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116557 (or 116555 counting only the distinct ones).

The product of its digits is 179200, while the sum is 42.

The square root of 728185452 is about 26984.9115618340. The cubic root of 728185452 is about 899.6646701371.

The spelling of 728185452 in words is "seven hundred twenty-eight million, one hundred eighty-five thousand, four hundred fifty-two".