18801028 has 12 divisors (see below), whose sum is σ = 34332480. Its totient is φ = 8991752.

The previous prime is 18801011. The next prime is 18801037. The reversal of 18801028 is 82010881.

It is a junction number, because it is equal to n+sod(n) for n = 18800987 and 18801005.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102088 + ... + 102271.

It is an arithmetic number, because the mean of its divisors is an integer number (2861040).

Almost surely, 2^18801028 is an apocalyptic number.

It is an amenable number.

18801028 is a deficient number, since it is larger than the sum of its proper divisors (15531452).

18801028 is a wasteful number, since it uses less digits than its factorization.

18801028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204386 (or 204384 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 28.

The square root of 18801028 is about 4336.0152213755. The cubic root of 18801028 is about 265.9054255152.

The spelling of 18801028 in words is "eighteen million, eight hundred one thousand, twenty-eight".