12135836 has 12 divisors (see below), whose sum is σ = 21756000. Its totient is φ = 5919840.

The previous prime is 12135821. The next prime is 12135853. The reversal of 12135836 is 63853121.

It is a junction number, because it is equal to n+sod(n) for n = 12135799 and 12135808.

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, 36836 + ... + 37163.

It is an arithmetic number, because the mean of its divisors is an integer number (1813000).

Almost surely, 2^12135836 is an apocalyptic number.

It is an amenable number.

12135836 is a deficient number, since it is larger than the sum of its proper divisors (9620164).

12135836 is a wasteful number, since it uses less digits than its factorization.

12135836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74044 (or 74042 counting only the distinct ones).

The product of its digits is 4320, while the sum is 29.

The square root of 12135836 is about 3483.6526807361. The cubic root of 12135836 is about 229.8034615925.

Adding to 12135836 its reverse (63853121), we get a palindrome (75988957).

The spelling of 12135836 in words is "twelve million, one hundred thirty-five thousand, eight hundred thirty-six".