28330713 has 12 divisors (see below), whose sum is σ = 41920788. Its totient is φ = 18426240.

The previous prime is 28330697. The next prime is 28330739. The reversal of 28330713 is 31703382.

It can be written as a sum of positive squares in 2 ways, for example, as 2442969 + 25887744 = 1563^2 + 5088^2 .

It is not a de Polignac number, because 28330713 - 2⁴ = 28330697 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28330793) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38020 + ... + 38757.

It is an arithmetic number, because the mean of its divisors is an integer number (3493399).

Almost surely, 2^28330713 is an apocalyptic number.

It is an amenable number.

28330713 is a deficient number, since it is larger than the sum of its proper divisors (13590075).

28330713 is a wasteful number, since it uses less digits than its factorization.

28330713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76824 (or 76821 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 28330713 is about 5322.6603310751. The cubic root of 28330713 is about 304.8497441390.

The spelling of 28330713 in words is "twenty-eight million, three hundred thirty thousand, seven hundred thirteen".