28026186 has 8 divisors (see below), whose sum is σ = 56052384. Its totient is φ = 9342060.

The previous prime is 28026181. The next prime is 28026191. The reversal of 28026186 is 68162082.

It is an interprime number because it is at equal distance from previous prime (28026181) and next prime (28026191).

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

28026186 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (28026181) 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 3 ways as a sum of consecutive naturals, for example, 2335510 + ... + 2335521.

It is an arithmetic number, because the mean of its divisors is an integer number (7006548).

Almost surely, 2^28026186 is an apocalyptic number.

28026186 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28026186 is a wasteful number, since it uses less digits than its factorization.

28026186 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4671036.

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 28026186 is about 5293.9763883115. The cubic root of 28026186 is about 303.7535297393.

The spelling of 28026186 in words is "twenty-eight million, twenty-six thousand, one hundred eighty-six".