28387795 has 4 divisors (see below), whose sum is σ = 34065360. Its totient is φ = 22710232.

The previous prime is 28387787. The next prime is 28387861. The reversal of 28387795 is 59778382.

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 28387795 - 2³ = 28387787 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

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, 2838775 + ... + 2838784.

It is an arithmetic number, because the mean of its divisors is an integer number (8516340).

Almost surely, 2^28387795 is an apocalyptic number.

28387795 is a deficient number, since it is larger than the sum of its proper divisors (5677565).

28387795 is an equidigital number, since it uses as much as digits as its factorization.

28387795 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5677564.

The product of its digits is 846720, while the sum is 49.

The square root of 28387795 is about 5328.0198010143. The cubic root of 28387795 is about 305.0543484624.

The spelling of 28387795 in words is "twenty-eight million, three hundred eighty-seven thousand, seven hundred ninety-five".