28336187 has 8 divisors (see below), whose sum is σ = 31076352. Its totient is φ = 25623400.

The previous prime is 28336177. The next prime is 28336193. The reversal of 28336187 is 78163382.

It is a happy number.

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

It is not a de Polignac number, because 28336187 - 2¹⁸ = 28074043 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 28336187.

It is not an unprimeable number, because it can be changed into a prime (28336157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4643 + ... + 8844.

It is an arithmetic number, because the mean of its divisors is an integer number (3884544).

Almost surely, 2^28336187 is an apocalyptic number.

28336187 is a deficient number, since it is larger than the sum of its proper divisors (2740165).

28336187 is a wasteful number, since it uses less digits than its factorization.

28336187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13689.

The product of its digits is 48384, while the sum is 38.

The square root of 28336187 is about 5323.1745227824. The cubic root of 28336187 is about 304.8693770139.

The spelling of 28336187 in words is "twenty-eight million, three hundred thirty-six thousand, one hundred eighty-seven".