12109008 has 40 divisors (see below), whose sum is σ = 32364000. Its totient is φ = 3896704.

The previous prime is 12109007. The next prime is 12109039. The reversal of 12109008 is 80090121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12109007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2958 + ... + 5741.

It is an arithmetic number, because the mean of its divisors is an integer number (809100).

Almost surely, 2^12109008 is an apocalyptic number.

It is an amenable number.

12109008 is an abundant number, since it is smaller than the sum of its proper divisors (20254992).

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

12109008 is a wasteful number, since it uses less digits than its factorization.

12109008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8739 (or 8733 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 21.

The square root of 12109008 is about 3479.7999942525. The cubic root of 12109008 is about 229.6339988583.

Adding to 12109008 its reverse (80090121), we get a palindrome (92199129).

The spelling of 12109008 in words is "twelve million, one hundred nine thousand, eight".