18806128 has 20 divisors (see below), whose sum is σ = 39749688. Its totient is φ = 8548160.

The previous prime is 18806107. The next prime is 18806141. The reversal of 18806128 is 82160881.

It is a junction number, because it is equal to n+sod(n) for n = 18806093 and 18806102.

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, 53251 + ... + 53602.

Almost surely, 2^18806128 is an apocalyptic number.

It is an amenable number.

18806128 is an abundant number, since it is smaller than the sum of its proper divisors (20943560).

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

18806128 is a wasteful number, since it uses less digits than its factorization.

18806128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106872 (or 106866 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 34.

The square root of 18806128 is about 4336.6032790653. The cubic root of 18806128 is about 265.9294666664.

It can be divided in two parts, 1880 and 6128, that added together give a palindrome (8008).

The spelling of 18806128 in words is "eighteen million, eight hundred six thousand, one hundred twenty-eight".