18224956 has 6 divisors (see below), whose sum is σ = 31893680. Its totient is φ = 9112476.

The previous prime is 18224953. The next prime is 18224957. The reversal of 18224956 is 65942281.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18224953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2278116 + ... + 2278123.

Almost surely, 2^18224956 is an apocalyptic number.

It is an amenable number.

18224956 is a deficient number, since it is larger than the sum of its proper divisors (13668724).

18224956 is a wasteful number, since it uses less digits than its factorization.

18224956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4556243 (or 4556241 counting only the distinct ones).

The product of its digits is 34560, while the sum is 37.

The square root of 18224956 is about 4269.0696878828. The cubic root of 18224956 is about 263.1613846583.

The spelling of 18224956 in words is "eighteen million, two hundred twenty-four thousand, nine hundred fifty-six".