18242202 has 24 divisors (see below), whose sum is σ = 40104288. Its totient is φ = 5527720.

The previous prime is 18242183. The next prime is 18242209. The reversal of 18242202 is 20224281.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (18242209) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11838 + ... + 13289.

It is an arithmetic number, because the mean of its divisors is an integer number (1671012).

Almost surely, 2^18242202 is an apocalyptic number.

18242202 is an abundant number, since it is smaller than the sum of its proper divisors (21862086).

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

18242202 is a wasteful number, since it uses less digits than its factorization.

18242202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25154 (or 25143 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

The square root of 18242202 is about 4271.0890882771. The cubic root of 18242202 is about 263.2443670338.

Adding to 18242202 its reverse (20224281), we get a palindrome (38466483).

The spelling of 18242202 in words is "eighteen million, two hundred forty-two thousand, two hundred two".