12240036 has 36 divisors (see below), whose sum is σ = 31663632. Its totient is φ = 3984624.

The previous prime is 12240013. The next prime is 12240037. The reversal of 12240036 is 63004221.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (12240037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2406 + ... + 5501.

Almost surely, 2^12240036 is an apocalyptic number.

It is an amenable number.

12240036 is an abundant number, since it is smaller than the sum of its proper divisors (19423596).

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

12240036 is a wasteful number, since it uses less digits than its factorization.

12240036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7960 (or 7955 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 12240036 is about 3498.5762818610. The cubic root of 12240036 is about 230.4592964423.

Adding to 12240036 its reverse (63004221), we get a palindrome (75244257).

The spelling of 12240036 in words is "twelve million, two hundred forty thousand, thirty-six".