18200212 has 12 divisors (see below), whose sum is σ = 31925376. Its totient is φ = 9078680.

The previous prime is 18200209. The next prime is 18200213. The reversal of 18200212 is 21200281.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18200213) 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, 3364 + ... + 6907.

It is an arithmetic number, because the mean of its divisors is an integer number (2660448).

Almost surely, 2^18200212 is an apocalyptic number.

It is an amenable number.

18200212 is a deficient number, since it is larger than the sum of its proper divisors (13725164).

18200212 is a wasteful number, since it uses less digits than its factorization.

18200212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10718 (or 10716 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 18200212 is about 4266.1706482512. The cubic root of 18200212 is about 263.0422327568.

Adding to 18200212 its reverse (21200281), we get a palindrome (39400493).

The spelling of 18200212 in words is "eighteen million, two hundred thousand, two hundred twelve".