18670244 has 12 divisors (see below), whose sum is σ = 32890368. Its totient is φ = 9273000.

The previous prime is 18670219. The next prime is 18670247. The reversal of 18670244 is 44207681.

It is a super-2 number, since 2×18670244² = 697156022039072, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 18670244.

It is not an unprimeable number, because it can be changed into a prime (18670247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14852 + ... + 16059.

It is an arithmetic number, because the mean of its divisors is an integer number (2740864).

Almost surely, 2^18670244 is an apocalyptic number.

It is an amenable number.

18670244 is a deficient number, since it is larger than the sum of its proper divisors (14220124).

18670244 is a wasteful number, since it uses less digits than its factorization.

18670244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31066 (or 31064 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 18670244 is about 4320.9077749936. The cubic root of 18670244 is about 265.2874251750.

The spelling of 18670244 in words is "eighteen million, six hundred seventy thousand, two hundred forty-four".