13861806 has 24 divisors (see below), whose sum is σ = 32250600. Its totient is φ = 3960432.

The previous prime is 13861787. The next prime is 13861807. The reversal of 13861806 is 60816831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13861807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23281 + ... + 23868.

It is an arithmetic number, because the mean of its divisors is an integer number (1343775).

Almost surely, 2^13861806 is an apocalyptic number.

13861806 is an abundant number, since it is smaller than the sum of its proper divisors (18388794).

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

13861806 is a wasteful number, since it uses less digits than its factorization.

13861806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47168 (or 47161 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 13861806 is about 3723.1446386086. The cubic root of 13861806 is about 240.2185855799.

The spelling of 13861806 in words is "thirteen million, eight hundred sixty-one thousand, eight hundred six".