18845224 has 16 divisors (see below), whose sum is σ = 35863200. Its totient is φ = 9281712.

The previous prime is 18845221. The next prime is 18845227. The reversal of 18845224 is 42254881.

It is an interprime number because it is at equal distance from previous prime (18845221) and next prime (18845227).

It is a super-2 number, since 2×18845224² = 710284935220352, 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 18845224.

It is not an unprimeable number, because it can be changed into a prime (18845221) 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, 17044 + ... + 18115.

It is an arithmetic number, because the mean of its divisors is an integer number (2241450).

Almost surely, 2^18845224 is an apocalyptic number.

It is an amenable number.

18845224 is a deficient number, since it is larger than the sum of its proper divisors (17017976).

18845224 is a wasteful number, since it uses less digits than its factorization.

18845224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35232 (or 35228 counting only the distinct ones).

The product of its digits is 20480, while the sum is 34.

The square root of 18845224 is about 4341.1086141676. The cubic root of 18845224 is about 266.1136190896.

The spelling of 18845224 in words is "eighteen million, eight hundred forty-five thousand, two hundred twenty-four".