18027428 has 12 divisors (see below), whose sum is σ = 33208560. Its totient is φ = 8539272.

The previous prime is 18027403. The next prime is 18027431. The reversal of 18027428 is 82472081.

It is a junction number, because it is equal to n+sod(n) for n = 18027394 and 18027403.

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, 118526 + ... + 118677.

It is an arithmetic number, because the mean of its divisors is an integer number (2767380).

Almost surely, 2^18027428 is an apocalyptic number.

It is an amenable number.

18027428 is a deficient number, since it is larger than the sum of its proper divisors (15181132).

18027428 is a wasteful number, since it uses less digits than its factorization.

18027428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237226 (or 237224 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 32.

The square root of 18027428 is about 4245.8718774829. The cubic root of 18027428 is about 262.2071861158.

The spelling of 18027428 in words is "eighteen million, twenty-seven thousand, four hundred twenty-eight".