18349224 has 16 divisors (see below), whose sum is σ = 45873120. Its totient is φ = 6116400.

The previous prime is 18349217. The next prime is 18349229. The reversal of 18349224 is 42294381.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (18349229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 382252 + ... + 382299.

It is an arithmetic number, because the mean of its divisors is an integer number (2867070).

Almost surely, 2^18349224 is an apocalyptic number.

It is an amenable number.

18349224 is an abundant number, since it is smaller than the sum of its proper divisors (27523896).

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

18349224 is a wasteful number, since it uses less digits than its factorization.

18349224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 764560 (or 764556 counting only the distinct ones).

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

The square root of 18349224 is about 4283.5994210477. The cubic root of 18349224 is about 263.7581577705.

The spelling of 18349224 in words is "eighteen million, three hundred forty-nine thousand, two hundred twenty-four".