18022648 has 16 divisors (see below), whose sum is σ = 38620080. Its totient is φ = 7723968.

The previous prime is 18022643. The next prime is 18022649. The reversal of 18022648 is 84622081.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18022643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 160861 + ... + 160972.

It is an arithmetic number, because the mean of its divisors is an integer number (2413755).

Almost surely, 2^18022648 is an apocalyptic number.

It is an amenable number.

18022648 is an abundant number, since it is smaller than the sum of its proper divisors (20597432).

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

18022648 is a wasteful number, since it uses less digits than its factorization.

18022648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321846 (or 321842 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 31.

The square root of 18022648 is about 4245.3089404659. The cubic root of 18022648 is about 262.1840091889.

The spelling of 18022648 in words is "eighteen million, twenty-two thousand, six hundred forty-eight".