728582538 has 8 divisors (see below), whose sum is σ = 1457165088. Its totient is φ = 242860844.

The previous prime is 728582513. The next prime is 728582557. The reversal of 728582538 is 835285827.

728582538 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

728582538 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60715206 + ... + 60715217.

It is an arithmetic number, because the mean of its divisors is an integer number (182145636).

Almost surely, 2^728582538 is an apocalyptic number.

728582538 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

728582538 is a wasteful number, since it uses less digits than its factorization.

728582538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121430428.

The product of its digits is 1075200, while the sum is 48.

The square root of 728582538 is about 26992.2681151473. The cubic root of 728582538 is about 899.8281721350.

The spelling of 728582538 in words is "seven hundred twenty-eight million, five hundred eighty-two thousand, five hundred thirty-eight".