28265818 has 8 divisors (see below), whose sum is σ = 48455712. Its totient is φ = 12113916.

The previous prime is 28265803. The next prime is 28265821. The reversal of 28265818 is 81856282.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1009480 + ... + 1009507.

It is an arithmetic number, because the mean of its divisors is an integer number (6056964).

Almost surely, 2^28265818 is an apocalyptic number.

28265818 is a deficient number, since it is larger than the sum of its proper divisors (20189894).

28265818 is a wasteful number, since it uses less digits than its factorization.

28265818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2018996.

The product of its digits is 61440, while the sum is 40.

The square root of 28265818 is about 5316.5607303970. The cubic root of 28265818 is about 304.6168008464.

The spelling of 28265818 in words is "twenty-eight million, two hundred sixty-five thousand, eight hundred eighteen".