18934224 has 40 divisors (see below), whose sum is σ = 49080192. Its totient is φ = 6289920.

The previous prime is 18934219. The next prime is 18934231. The reversal of 18934224 is 42243981.

It is a congruent number.

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, 20329 + ... + 21239.

Almost surely, 2^18934224 is an apocalyptic number.

It is an amenable number.

18934224 is an abundant number, since it is smaller than the sum of its proper divisors (30145968).

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

18934224 is a wasteful number, since it uses less digits than its factorization.

18934224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1355 (or 1349 counting only the distinct ones).

The product of its digits is 13824, while the sum is 33.

The square root of 18934224 is about 4351.3473775372. The cubic root of 18934224 is about 266.5318846661.

The spelling of 18934224 in words is "eighteen million, nine hundred thirty-four thousand, two hundred twenty-four".