728439850 has 12 divisors (see below), whose sum is σ = 1354898214. Its totient is φ = 291375920.

The previous prime is 728439839. The next prime is 728439853. The reversal of 728439850 is 58934827.

728439850 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 704849401 + 23590449 = 26549^2 + 4857^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 728439850.

It is not an unprimeable number, because it can be changed into a prime (728439853) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7284349 + ... + 7284448.

Almost surely, 2^728439850 is an apocalyptic number.

728439850 is a deficient number, since it is larger than the sum of its proper divisors (626458364).

728439850 is a wasteful number, since it uses less digits than its factorization.

728439850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14568809 (or 14568804 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 46.

The square root of 728439850 is about 26989.6248584526. The cubic root of 728439850 is about 899.7694265305.

The spelling of 728439850 in words is "seven hundred twenty-eight million, four hundred thirty-nine thousand, eight hundred fifty".