18666080 has 24 divisors (see below), whose sum is σ = 44098992. Its totient is φ = 7466368.

The previous prime is 18666077. The next prime is 18666107. The reversal of 18666080 is 8066681.

It is a self number, because there is not a number n which added to its sum of digits gives 18666080.

It is a congruent number.

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, 58172 + ... + 58491.

It is an arithmetic number, because the mean of its divisors is an integer number (1837458).

Almost surely, 2^18666080 is an apocalyptic number.

18666080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18666080 is an abundant number, since it is smaller than the sum of its proper divisors (25432912).

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

18666080 is a wasteful number, since it uses less digits than its factorization.

18666080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116678 (or 116670 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 18666080 is about 4320.4259049311. The cubic root of 18666080 is about 265.2677014732.

It can be divided in two parts, 186 and 66080, that added together give a palindrome (66266).

The spelling of 18666080 in words is "eighteen million, six hundred sixty-six thousand, eighty".