18242274 has 16 divisors (see below), whose sum is σ = 36764640. Its totient is φ = 6034080.

The previous prime is 18242249. The next prime is 18242281. The reversal of 18242274 is 47224281.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10819 + ... + 12390.

It is an arithmetic number, because the mean of its divisors is an integer number (2297790).

Almost surely, 2^18242274 is an apocalyptic number.

18242274 is an abundant number, since it is smaller than the sum of its proper divisors (18522366).

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

18242274 is a wasteful number, since it uses less digits than its factorization.

18242274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23345.

The product of its digits is 7168, while the sum is 30.

The square root of 18242274 is about 4271.0975170324. The cubic root of 18242274 is about 263.2447133657.

The spelling of 18242274 in words is "eighteen million, two hundred forty-two thousand, two hundred seventy-four".