728839013 has 16 divisors (see below), whose sum is σ = 842054400. Its totient is φ = 617934336.

The previous prime is 728839009. The next prime is 728839037. The reversal of 728839013 is 310938827.

It is a cyclic number.

It is not a de Polignac number, because 728839013 - 2² = 728839009 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728839043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 272981 + ... + 275637.

It is an arithmetic number, because the mean of its divisors is an integer number (52628400).

Almost surely, 2^728839013 is an apocalyptic number.

It is an amenable number.

728839013 is a deficient number, since it is larger than the sum of its proper divisors (113215387).

728839013 is a wasteful number, since it uses less digits than its factorization.

728839013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3076.

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 728839013 is about 26997.0185946523. The cubic root of 728839013 is about 899.9337453285.

The spelling of 728839013 in words is "seven hundred twenty-eight million, eight hundred thirty-nine thousand, thirteen".