28018116 has 48 divisors (see below), whose sum is σ = 83018880. Its totient is φ = 8004960.

The previous prime is 28018099. The next prime is 28018121. The reversal of 28018116 is 61181082.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 28018116.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17775 + ... + 19286.

It is an arithmetic number, because the mean of its divisors is an integer number (1729560).

Almost surely, 2^28018116 is an apocalyptic number.

It is an amenable number.

28018116 is an abundant number, since it is smaller than the sum of its proper divisors (55000764).

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

28018116 is a wasteful number, since it uses less digits than its factorization.

28018116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37081 (or 37073 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 27.

The square root of 28018116 is about 5293.2141464331. The cubic root of 28018116 is about 303.7243721710.

Adding to 28018116 its reverse (61181082), we get a palindrome (89199198).

The spelling of 28018116 in words is "twenty-eight million, eighteen thousand, one hundred sixteen".