18222522 has 8 divisors (see below), whose sum is σ = 36445056. Its totient is φ = 6074172.

The previous prime is 18222473. The next prime is 18222541. The reversal of 18222522 is 22522281.

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

18222522 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 18222492 and 18222501.

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, 1518538 + ... + 1518549.

It is an arithmetic number, because the mean of its divisors is an integer number (4555632).

Almost surely, 2^18222522 is an apocalyptic number.

18222522 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18222522 is a wasteful number, since it uses less digits than its factorization.

18222522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3037092.

The product of its digits is 1280, while the sum is 24.

The square root of 18222522 is about 4268.7846045450. The cubic root of 18222522 is about 263.1496687941.

The spelling of 18222522 in words is "eighteen million, two hundred twenty-two thousand, five hundred twenty-two".