18200222 has 8 divisors (see below), whose sum is σ = 28487376. Its totient is φ = 8704432.

The previous prime is 18200219. The next prime is 18200279. The reversal of 18200222 is 22200281.

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

It is a self number, because there is not a number n which added to its sum of digits gives 18200222.

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, 197783 + ... + 197874.

It is an arithmetic number, because the mean of its divisors is an integer number (3560922).

Almost surely, 2^18200222 is an apocalyptic number.

18200222 is a deficient number, since it is larger than the sum of its proper divisors (10287154).

18200222 is a wasteful number, since it uses less digits than its factorization.

18200222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395682.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 18200222 is about 4266.1718202623. The cubic root of 18200222 is about 263.0422809324.

The spelling of 18200222 in words is "eighteen million, two hundred thousand, two hundred twenty-two".