18022768 has 20 divisors (see below), whose sum is σ = 35029008. Its totient is φ = 8983040.

The previous prime is 18022757. The next prime is 18022787. The reversal of 18022768 is 86722081.

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, 4053 + ... + 7243.

Almost surely, 2^18022768 is an apocalyptic number.

It is an amenable number.

18022768 is a deficient number, since it is larger than the sum of its proper divisors (17006240).

18022768 is a wasteful number, since it uses less digits than its factorization.

18022768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3552 (or 3546 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 34.

The square root of 18022768 is about 4245.3230736894. The cubic root of 18022768 is about 262.1845910866.

The spelling of 18022768 in words is "eighteen million, twenty-two thousand, seven hundred sixty-eight".