728189230 has 16 divisors (see below), whose sum is σ = 1346166720. Its totient is φ = 283403232.

The previous prime is 728189191. The next prime is 728189239. The reversal of 728189230 is 32981827.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728189239) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 983670 + ... + 984409.

It is an arithmetic number, because the mean of its divisors is an integer number (84135420).

Almost surely, 2^728189230 is an apocalyptic number.

728189230 is a deficient number, since it is larger than the sum of its proper divisors (617977490).

728189230 is a wasteful number, since it uses less digits than its factorization.

728189230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1968123.

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 728189230 is about 26984.9815638255. The cubic root of 728189230 is about 899.6662260261. Note that the first 3 decimals are identical.

The spelling of 728189230 in words is "seven hundred twenty-eight million, one hundred eighty-nine thousand, two hundred thirty".