728824530 has 48 divisors (see below), whose sum is σ = 2034763200. Its totient is φ = 166588128.

The previous prime is 728824517. The next prime is 728824531. The reversal of 728824530 is 35428827.

It is not an unprimeable number, because it can be changed into a prime (728824531) 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 23 ways as a sum of consecutive naturals, for example, 246430 + ... + 249369.

It is an arithmetic number, because the mean of its divisors is an integer number (42390900).

Almost surely, 2^728824530 is an apocalyptic number.

728824530 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

728824530 is an abundant number, since it is smaller than the sum of its proper divisors (1305938670).

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

728824530 is a wasteful number, since it uses less digits than its factorization.

728824530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495823 (or 495816 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 39.

The square root of 728824530 is about 26996.7503599970. The cubic root of 728824530 is about 899.9277843291.

The spelling of 728824530 in words is "seven hundred twenty-eight million, eight hundred twenty-four thousand, five hundred thirty".