28941185 has 16 divisors (see below), whose sum is σ = 42744576. Its totient is φ = 18318528.

The previous prime is 28941181. The next prime is 28941229. The reversal of 28941185 is 58114982.

It is a cyclic number.

It is not a de Polignac number, because 28941185 - 2² = 28941181 is a prime.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28941181) 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 15 ways as a sum of consecutive naturals, for example, 31349 + ... + 32258.

It is an arithmetic number, because the mean of its divisors is an integer number (2671536).

Almost surely, 2^28941185 is an apocalyptic number.

It is an amenable number.

28941185 is a deficient number, since it is larger than the sum of its proper divisors (13803391).

28941185 is a wasteful number, since it uses less digits than its factorization.

28941185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63632.

The product of its digits is 23040, while the sum is 38.

The square root of 28941185 is about 5379.7011998809. The cubic root of 28941185 is about 307.0238427867.

The spelling of 28941185 in words is "twenty-eight million, nine hundred forty-one thousand, one hundred eighty-five".