18750224 has 20 divisors (see below), whose sum is σ = 36426240. Its totient is φ = 9349920.

The previous prime is 18750163. The next prime is 18750229. The reversal of 18750224 is 42205781.

It is a hoax number, since the sum of its digits (29) 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 (18750229) 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, 5537 + ... + 8255.

It is an arithmetic number, because the mean of its divisors is an integer number (1821312).

Almost surely, 2^18750224 is an apocalyptic number.

It is an amenable number.

18750224 is a deficient number, since it is larger than the sum of its proper divisors (17676016).

18750224 is a wasteful number, since it uses less digits than its factorization.

18750224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3158 (or 3152 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 29.

The square root of 18750224 is about 4330.1528841370. The cubic root of 18750224 is about 265.6657002271.

The spelling of 18750224 in words is "eighteen million, seven hundred fifty thousand, two hundred twenty-four".