18271122 has 32 divisors (see below), whose sum is σ = 38949120. Its totient is φ = 5697360.

The previous prime is 18271093. The next prime is 18271139. The reversal of 18271122 is 22117281.

It is a junction number, because it is equal to n+sod(n) for n = 18271092 and 18271101.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8497 + ... + 10427.

It is an arithmetic number, because the mean of its divisors is an integer number (1217160).

Almost surely, 2^18271122 is an apocalyptic number.

18271122 is an abundant number, since it is smaller than the sum of its proper divisors (20677998).

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

18271122 is a wasteful number, since it uses less digits than its factorization.

18271122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2038.

The product of its digits is 448, while the sum is 24.

The square root of 18271122 is about 4274.4733008875. The cubic root of 18271122 is about 263.3834037496.

The spelling of 18271122 in words is "eighteen million, two hundred seventy-one thousand, one hundred twenty-two".