18128066 has 16 divisors (see below), whose sum is σ = 29747520. Its totient is φ = 8216880.

The previous prime is 18128063. The next prime is 18128081. The reversal of 18128066 is 66082181.

It is not an unprimeable number, because it can be changed into a prime (18128063) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8720 + ... + 10596.

It is an arithmetic number, because the mean of its divisors is an integer number (1859220).

Almost surely, 2^18128066 is an apocalyptic number.

18128066 is a deficient number, since it is larger than the sum of its proper divisors (11619454).

18128066 is a wasteful number, since it uses less digits than its factorization.

18128066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2329.

The product of its (nonzero) digits is 4608, while the sum is 32.

The square root of 18128066 is about 4257.7066596937. The cubic root of 18128066 is about 262.6942042842.

The spelling of 18128066 in words is "eighteen million, one hundred twenty-eight thousand, sixty-six".