11808538 has 32 divisors (see below), whose sum is σ = 21565440. Its totient is φ = 4736880.

The previous prime is 11808521. The next prime is 11808547. The reversal of 11808538 is 83580811.

11808538 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27183 + ... + 27613.

It is an arithmetic number, because the mean of its divisors is an integer number (673920).

Almost surely, 2^11808538 is an apocalyptic number.

11808538 is a deficient number, since it is larger than the sum of its proper divisors (9756902).

11808538 is a wasteful number, since it uses less digits than its factorization.

11808538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 562.

The product of its (nonzero) digits is 7680, while the sum is 34.

The square root of 11808538 is about 3436.3553366903. The cubic root of 11808538 is about 227.7187076825.

The spelling of 11808538 in words is "eleven million, eight hundred eight thousand, five hundred thirty-eight".