18704222 has 8 divisors (see below), whose sum is σ = 28961472. Its totient is φ = 9050400.

The previous prime is 18704201. The next prime is 18704243. The reversal of 18704222 is 22240781.

It is an interprime number because it is at equal distance from previous prime (18704201) and next prime (18704243).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 18704191 and 18704200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 150779 + ... + 150902.

It is an arithmetic number, because the mean of its divisors is an integer number (3620184).

Almost surely, 2^18704222 is an apocalyptic number.

18704222 is a deficient number, since it is larger than the sum of its proper divisors (10257250).

18704222 is a wasteful number, since it uses less digits than its factorization.

18704222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301714.

The product of its (nonzero) digits is 1792, while the sum is 26.

The square root of 18704222 is about 4324.8378004267. The cubic root of 18704222 is about 265.4482599503.

The spelling of 18704222 in words is "eighteen million, seven hundred four thousand, two hundred twenty-two".