28095013 has 4 divisors (see below), whose sum is σ = 28106028. Its totient is φ = 28084000.

The previous prime is 28094987. The next prime is 28095017. The reversal of 28095013 is 31059082.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 18122049 + 9972964 = 4257^2 + 3158^2 .

It is a cyclic number.

It is not a de Polignac number, because 28095013 - 2¹⁷ = 27963941 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 (28095017) 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, 513 + ... + 7513.

It is an arithmetic number, because the mean of its divisors is an integer number (7026507).

Almost surely, 2^28095013 is an apocalyptic number.

It is an amenable number.

28095013 is a deficient number, since it is larger than the sum of its proper divisors (11015).

28095013 is an equidigital number, since it uses as much as digits as its factorization.

28095013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11014.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 28095013 is about 5300.4729034304. The cubic root of 28095013 is about 304.0019801637.

The spelling of 28095013 in words is "twenty-eight million, ninety-five thousand, thirteen".