18806568 has 32 divisors (see below), whose sum is σ = 51291360. Its totient is φ = 5698880.

The previous prime is 18806549. The next prime is 18806569. The reversal of 18806568 is 86560881.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18806569) 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, 35355 + ... + 35882.

It is an arithmetic number, because the mean of its divisors is an integer number (1602855).

Almost surely, 2^18806568 is an apocalyptic number.

It is an amenable number.

18806568 is an abundant number, since it is smaller than the sum of its proper divisors (32484792).

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

18806568 is a wasteful number, since it uses less digits than its factorization.

18806568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71257 (or 71253 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 42.

The square root of 18806568 is about 4336.6540097176. The cubic root of 18806568 is about 265.9315406012.

It can be divided in two parts, 1880 and 6568, that added together give a palindrome (8448).

The spelling of 18806568 in words is "eighteen million, eight hundred six thousand, five hundred sixty-eight".