12020636 has 12 divisors (see below), whose sum is σ = 21071400. Its totient is φ = 6000240.

The previous prime is 12020633. The next prime is 12020639. The reversal of 12020636 is 63602021.

It is an interprime number because it is at equal distance from previous prime (12020633) and next prime (12020639).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12020633) 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, 590 + ... + 4938.

It is an arithmetic number, because the mean of its divisors is an integer number (1755950).

Almost surely, 2^12020636 is an apocalyptic number.

It is an amenable number.

12020636 is a deficient number, since it is larger than the sum of its proper divisors (9050764).

12020636 is a wasteful number, since it uses less digits than its factorization.

12020636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5044 (or 5042 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 12020636 is about 3467.0788857481. The cubic root of 12020636 is about 229.0740084839.

Adding to 12020636 its reverse (63602021), we get a palindrome (75622657).

The spelling of 12020636 in words is "twelve million, twenty thousand, six hundred thirty-six".