728228829 has 16 divisors (see below), whose sum is σ = 1028316672. Its totient is φ = 457443888.

The previous prime is 728228777. The next prime is 728228833. The reversal of 728228829 is 928822827.

It is a happy number.

It is not a de Polignac number, because 728228829 - 2¹¹ = 728226781 is a prime.

It is a super-2 number, since 2×728228829² = 1060634454773422482, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728228629) 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, 74139 + ... + 83384.

It is an arithmetic number, because the mean of its divisors is an integer number (64269792).

Almost surely, 2^728228829 is an apocalyptic number.

It is an amenable number.

728228829 is a deficient number, since it is larger than the sum of its proper divisors (300087843).

728228829 is a wasteful number, since it uses less digits than its factorization.

728228829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157616.

The product of its digits is 516096, while the sum is 48.

The square root of 728228829 is about 26985.7152767904. The cubic root of 728228829 is about 899.6825337090.

The spelling of 728228829 in words is "seven hundred twenty-eight million, two hundred twenty-eight thousand, eight hundred twenty-nine".