728228830 has 32 divisors (see below), whose sum is σ = 1586195136. Its totient is φ = 234991104.

The previous prime is 728228777. The next prime is 728228833. The reversal of 728228830 is 38822827.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728228833) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 304789 + ... + 307168.

It is an arithmetic number, because the mean of its divisors is an integer number (49568598).

Almost surely, 2^728228830 is an apocalyptic number.

728228830 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

728228830 is an abundant number, since it is smaller than the sum of its proper divisors (857966306).

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

728228830 is a wasteful number, since it uses less digits than its factorization.

728228830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 611988.

The product of its (nonzero) digits is 86016, while the sum is 40.

The square root of 728228830 is about 26985.7152953187. The cubic root of 728228830 is about 899.6825341208.

The spelling of 728228830 in words is "seven hundred twenty-eight million, two hundred twenty-eight thousand, eight hundred thirty".