28188795 has 8 divisors (see below), whose sum is σ = 45102096. Its totient is φ = 15034016.

The previous prime is 28188791. The next prime is 28188803. The reversal of 28188795 is 59788182.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28188795 - 2² = 28188791 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28188791) 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 7 ways as a sum of consecutive naturals, for example, 939612 + ... + 939641.

It is an arithmetic number, because the mean of its divisors is an integer number (5637762).

Almost surely, 2^28188795 is an apocalyptic number.

28188795 is a deficient number, since it is larger than the sum of its proper divisors (16913301).

28188795 is a wasteful number, since it uses less digits than its factorization.

28188795 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1879261.

The product of its digits is 322560, while the sum is 48.

The square root of 28188795 is about 5309.3121023349. The cubic root of 28188795 is about 304.3398604141.

The spelling of 28188795 in words is "twenty-eight million, one hundred eighty-eight thousand, seven hundred ninety-five".