12018236 has 12 divisors (see below), whose sum is σ = 21946512. Its totient is φ = 5747808.

The previous prime is 12018217. The next prime is 12018247. The reversal of 12018236 is 63281021.

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65225 + ... + 65408.

It is an arithmetic number, because the mean of its divisors is an integer number (1828876).

Almost surely, 2^12018236 is an apocalyptic number.

It is an amenable number.

12018236 is a deficient number, since it is larger than the sum of its proper divisors (9928276).

12018236 is a wasteful number, since it uses less digits than its factorization.

12018236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130660 (or 130658 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 12018236 is about 3466.7327557803. The cubic root of 12018236 is about 229.0587620856.

Adding to 12018236 its reverse (63281021), we get a palindrome (75299257).

The spelling of 12018236 in words is "twelve million, eighteen thousand, two hundred thirty-six".