28036895 has 4 divisors (see below), whose sum is σ = 33644280. Its totient is φ = 22429512.

The previous prime is 28036867. The next prime is 28036919. The reversal of 28036895 is 59863082.

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

It is a cyclic number.

It is not a de Polignac number, because 28036895 - 2¹⁴ = 28020511 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2803685 + ... + 2803694.

It is an arithmetic number, because the mean of its divisors is an integer number (8411070).

Almost surely, 2^28036895 is an apocalyptic number.

28036895 is a deficient number, since it is larger than the sum of its proper divisors (5607385).

28036895 is an equidigital number, since it uses as much as digits as its factorization.

28036895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5607384.

The product of its (nonzero) digits is 103680, while the sum is 41.

The square root of 28036895 is about 5294.9877242539. The cubic root of 28036895 is about 303.7922135893.

The spelling of 28036895 in words is "twenty-eight million, thirty-six thousand, eight hundred ninety-five".