12291036 has 24 divisors (see below), whose sum is σ = 28828800. Its totient is φ = 4075632.

The previous prime is 12291029. The next prime is 12291049. The reversal of 12291036 is 63019221.

It is a junction number, because it is equal to n+sod(n) for n = 12290997 and 12291015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 186 + ... + 4961.

It is an arithmetic number, because the mean of its divisors is an integer number (1201200).

Almost surely, 2^12291036 is an apocalyptic number.

It is an amenable number.

12291036 is an abundant number, since it is smaller than the sum of its proper divisors (16537764).

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

12291036 is a wasteful number, since it uses less digits than its factorization.

12291036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5353 (or 5351 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 12291036 is about 3505.8573844354. The cubic root of 12291036 is about 230.7789343270.

The spelling of 12291036 in words is "twelve million, two hundred ninety-one thousand, thirty-six".