728622113 has 4 divisors (see below), whose sum is σ = 728706708. Its totient is φ = 728537520.

The previous prime is 728622101. The next prime is 728622133. The reversal of 728622113 is 311226827.

728622113 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 311226827 = 173 ⋅1798999.

It can be written as a sum of positive squares in 2 ways, for example, as 634687249 + 93934864 = 25193^2 + 9692^2 .

It is a cyclic number.

It is not a de Polignac number, because 728622113 - 2¹⁴ = 728605729 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 728622113.

It is not an unprimeable number, because it can be changed into a prime (728622133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27698 + ... + 47163.

It is an arithmetic number, because the mean of its divisors is an integer number (182176677).

Almost surely, 2^728622113 is an apocalyptic number.

It is an amenable number.

728622113 is a deficient number, since it is larger than the sum of its proper divisors (84595).

728622113 is an equidigital number, since it uses as much as digits as its factorization.

728622113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84594.

The product of its digits is 8064, while the sum is 32.

The square root of 728622113 is about 26993.0011854925. The cubic root of 728622113 is about 899.8444640687.

The spelling of 728622113 in words is "seven hundred twenty-eight million, six hundred twenty-two thousand, one hundred thirteen".