28164713 has 4 divisors (see below), whose sum is σ = 29135940. Its totient is φ = 27193488.

The previous prime is 28164691. The next prime is 28164749. The reversal of 28164713 is 31746182.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 22250089 + 5914624 = 4717^2 + 2432^2 .

It is a cyclic number.

It is not a de Polignac number, because 28164713 - 2⁸ = 28164457 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 28164713.

It is not an unprimeable number, because it can be changed into a prime (28164793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 485570 + ... + 485627.

It is an arithmetic number, because the mean of its divisors is an integer number (7283985).

Almost surely, 2^28164713 is an apocalyptic number.

It is an amenable number.

28164713 is a deficient number, since it is larger than the sum of its proper divisors (971227).

28164713 is an equidigital number, since it uses as much as digits as its factorization.

28164713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 971226.

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

The square root of 28164713 is about 5307.0437156669. The cubic root of 28164713 is about 304.2531687502.

The spelling of 28164713 in words is "twenty-eight million, one hundred sixty-four thousand, seven hundred thirteen".