18056222 has 8 divisors (see below), whose sum is σ = 27816456. Its totient is φ = 8784072.

The previous prime is 18056221. The next prime is 18056243. The reversal of 18056222 is 22265081.

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 = 18056191 and 18056200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18056221) 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, 121928 + ... + 122075.

It is an arithmetic number, because the mean of its divisors is an integer number (3477057).

Almost surely, 2^18056222 is an apocalyptic number.

18056222 is a deficient number, since it is larger than the sum of its proper divisors (9760234).

18056222 is a wasteful number, since it uses less digits than its factorization.

18056222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244042.

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 18056222 is about 4249.2613475756. The cubic root of 18056222 is about 262.3467138322.

The spelling of 18056222 in words is "eighteen million, fifty-six thousand, two hundred twenty-two".