13806810 has 24 divisors (see below), whose sum is σ = 35897940. Its totient is φ = 3681792.

The previous prime is 13806803. The next prime is 13806833. The reversal of 13806810 is 1860831.

It can be written as a sum of positive squares in 2 ways, for example, as 13549761 + 257049 = 3681^2 + 507^2 .

It is a super-2 number, since 2×13806810² = 381256004752200, which contains 22 as substring.

It is an unprimeable number.

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, 76615 + ... + 76794.

Almost surely, 2^13806810 is an apocalyptic number.

13806810 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13806810 is an abundant number, since it is smaller than the sum of its proper divisors (22091130).

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

13806810 is a wasteful number, since it uses less digits than its factorization.

13806810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153422 (or 153419 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 13806810 is about 3715.7516063375. The cubic root of 13806810 is about 239.9004795711.

The spelling of 13806810 in words is "thirteen million, eight hundred six thousand, eight hundred ten".