728859049 has 8 divisors (see below), whose sum is σ = 742698248. Its totient is φ = 715080960.

The previous prime is 728859017. The next prime is 728859119. The reversal of 728859049 is 940958827.

It can be written as a sum of positive squares in 4 ways, for example, as 19009600 + 709849449 = 4360^2 + 26643^2 .

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 728859049 - 2⁵ = 728859017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 728858987 and 728859005.

It is not an unprimeable number, because it can be changed into a prime (728859749) 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, 9169 + ... + 39265.

It is an arithmetic number, because the mean of its divisors is an integer number (92837281).

Almost surely, 2^728859049 is an apocalyptic number.

It is an amenable number.

728859049 is a deficient number, since it is larger than the sum of its proper divisors (13839199).

728859049 is a wasteful number, since it uses less digits than its factorization.

728859049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30555.

The product of its (nonzero) digits is 1451520, while the sum is 52.

The square root of 728859049 is about 26997.3896701144. The cubic root of 728859049 is about 899.9419917345.

The spelling of 728859049 in words is "seven hundred twenty-eight million, eight hundred fifty-nine thousand, forty-nine".