18427628 has 24 divisors (see below), whose sum is σ = 33516000. Its totient is φ = 8857728.

The previous prime is 18427601. The next prime is 18427631. The reversal of 18427628 is 82672481.

It is a junction number, because it is equal to n+sod(n) for n = 18427591 and 18427600.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12473 + ... + 13871.

It is an arithmetic number, because the mean of its divisors is an integer number (1396500).

Almost surely, 2^18427628 is an apocalyptic number.

It is an amenable number.

18427628 is a deficient number, since it is larger than the sum of its proper divisors (15088372).

18427628 is a wasteful number, since it uses less digits than its factorization.

18427628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1529 (or 1527 counting only the distinct ones).

The product of its digits is 43008, while the sum is 38.

The square root of 18427628 is about 4292.7413152903. The cubic root of 18427628 is about 264.1332928059.

The spelling of 18427628 in words is "eighteen million, four hundred twenty-seven thousand, six hundred twenty-eight".