18242072 has 24 divisors (see below), whose sum is σ = 34725540. Its totient is φ = 8983920.

The previous prime is 18242057. The next prime is 18242083. The reversal of 18242072 is 27024281.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 54947 + ... + 55277.

Almost surely, 2^18242072 is an apocalyptic number.

It is an amenable number.

18242072 is a deficient number, since it is larger than the sum of its proper divisors (16483468).

18242072 is an equidigital number, since it uses as much as digits as its factorization.

18242072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 503 (or 416 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 26.

The square root of 18242072 is about 4271.0738696492. The cubic root of 18242072 is about 263.2437417100.

The spelling of 18242072 in words is "eighteen million, two hundred forty-two thousand, seventy-two".