18122128 has 10 divisors (see below), whose sum is σ = 35111654. Its totient is φ = 9061056.

The previous prime is 18122113. The next prime is 18122141. The reversal of 18122128 is 82122181.

It can be written as a sum of positive squares in only one way, i.e., 13927824 + 4194304 = 3732^2 + 2048^2 .

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 566301 + ... + 566332.

Almost surely, 2^18122128 is an apocalyptic number.

It is an amenable number.

18122128 is a deficient number, since it is larger than the sum of its proper divisors (16989526).

18122128 is a wasteful number, since it uses less digits than its factorization.

18122128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1132641 (or 1132635 counting only the distinct ones).

The product of its digits is 512, while the sum is 25.

The square root of 18122128 is about 4257.0092788247. The cubic root of 18122128 is about 262.6655185889.

The spelling of 18122128 in words is "eighteen million, one hundred twenty-two thousand, one hundred twenty-eight".