28104618 has 8 divisors (see below), whose sum is σ = 56209248. Its totient is φ = 9368204.

The previous prime is 28104613. The next prime is 28104619. The reversal of 28104618 is 81640182.

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

28104618 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (28104613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2342046 + ... + 2342057.

It is an arithmetic number, because the mean of its divisors is an integer number (7026156).

Almost surely, 2^28104618 is an apocalyptic number.

28104618 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.

28104618 is a wasteful number, since it uses less digits than its factorization.

28104618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4684108.

The product of its (nonzero) digits is 3072, while the sum is 30.

The square root of 28104618 is about 5301.3788772356. The cubic root of 28104618 is about 304.0366198384.

The spelling of 28104618 in words is "twenty-eight million, one hundred four thousand, six hundred eighteen".