18022146 has 32 divisors (see below), whose sum is σ = 38232000. Its totient is φ = 5647680.

The previous prime is 18022141. The next prime is 18022153. The reversal of 18022146 is 64122081.

It is not an unprimeable number, because it can be changed into a prime (18022141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16456 + ... + 17516.

It is an arithmetic number, because the mean of its divisors is an integer number (1194750).

Almost surely, 2^18022146 is an apocalyptic number.

18022146 is an abundant number, since it is smaller than the sum of its proper divisors (20209854).

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

18022146 is a wasteful number, since it uses less digits than its factorization.

18022146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1234.

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 18022146 is about 4245.2498159708. The cubic root of 18022146 is about 262.1815748890.

The spelling of 18022146 in words is "eighteen million, twenty-two thousand, one hundred forty-six".