12091808 has 24 divisors (see below), whose sum is σ = 23950080. Its totient is φ = 6009280.

The previous prime is 12091789. The next prime is 12091861. The reversal of 12091808 is 80819021.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4673 + ... + 6783.

It is an arithmetic number, because the mean of its divisors is an integer number (997920).

Almost surely, 2^12091808 is an apocalyptic number.

It is an amenable number.

12091808 is a deficient number, since it is larger than the sum of its proper divisors (11858272).

12091808 is a wasteful number, since it uses less digits than its factorization.

12091808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2300 (or 2292 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 29.

The square root of 12091808 is about 3477.3277096069. The cubic root of 12091808 is about 229.5252209867.

The spelling of 12091808 in words is "twelve million, ninety-one thousand, eight hundred eight".