728437139 has 8 divisors (see below), whose sum is σ = 733941600. Its totient is φ = 722943936.

The previous prime is 728437111. The next prime is 728437169. The reversal of 728437139 is 931734827.

728437139 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.

It is a cyclic number.

It is not a de Polignac number, because 728437139 - 2⁸ = 728436883 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 728437139.

It is not an unprimeable number, because it can be changed into a prime (728437169) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 162482 + ... + 166904.

It is an arithmetic number, because the mean of its divisors is an integer number (91742700).

Almost surely, 2^728437139 is an apocalyptic number.

728437139 is a deficient number, since it is larger than the sum of its proper divisors (5504461).

728437139 is a wasteful number, since it uses less digits than its factorization.

728437139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5629.

The product of its digits is 254016, while the sum is 44.

The square root of 728437139 is about 26989.5746354032. The cubic root of 728437139 is about 899.7683103194.

The spelling of 728437139 in words is "seven hundred twenty-eight million, four hundred thirty-seven thousand, one hundred thirty-nine".