11978806 has 24 divisors (see below), whose sum is σ = 21089520. Its totient is φ = 4998720.

The previous prime is 11978737. The next prime is 11978819. The reversal of 11978806 is 60887911.

11978806 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23280 + ... + 23788.

It is an arithmetic number, because the mean of its divisors is an integer number (878730).

Almost surely, 2^11978806 is an apocalyptic number.

11978806 is a deficient number, since it is larger than the sum of its proper divisors (9110714).

11978806 is an equidigital number, since it uses as much as digits as its factorization.

11978806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 600 (or 559 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 40.

The square root of 11978806 is about 3461.0411728265. The cubic root of 11978806 is about 228.8079853400.

The spelling of 11978806 in words is "eleven million, nine hundred seventy-eight thousand, eight hundred six".