18372244 has 24 divisors (see below), whose sum is σ = 35574336. Its totient is φ = 8232000.

The previous prime is 18372241. The next prime is 18372269. The reversal of 18372244 is 44227381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18372241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 184 + ... + 6064.

It is an arithmetic number, because the mean of its divisors is an integer number (1482264).

Almost surely, 2^18372244 is an apocalyptic number.

It is an amenable number.

18372244 is a deficient number, since it is larger than the sum of its proper divisors (17202092).

18372244 is a wasteful number, since it uses less digits than its factorization.

18372244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5967 (or 5965 counting only the distinct ones).

The product of its digits is 10752, while the sum is 31.

The square root of 18372244 is about 4286.2855714476. The cubic root of 18372244 is about 263.8684108521.

It can be divided in two parts, 183 and 72244, that added together give a palindrome (72427).

The spelling of 18372244 in words is "eighteen million, three hundred seventy-two thousand, two hundred forty-four".