18428108 has 12 divisors (see below), whose sum is σ = 33361440. Its totient is φ = 8896272.

The previous prime is 18428101. The next prime is 18428131. The reversal of 18428108 is 80182481.

It is not an unprimeable number, because it can be changed into a prime (18428101) 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, 79316 + ... + 79547.

It is an arithmetic number, because the mean of its divisors is an integer number (2780120).

Almost surely, 2^18428108 is an apocalyptic number.

It is an amenable number.

18428108 is a deficient number, since it is larger than the sum of its proper divisors (14933332).

18428108 is a wasteful number, since it uses less digits than its factorization.

18428108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158896 (or 158894 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 32.

The square root of 18428108 is about 4292.7972232566. The cubic root of 18428108 is about 264.1355861536.

The spelling of 18428108 in words is "eighteen million, four hundred twenty-eight thousand, one hundred eight".