13805712 has 30 divisors (see below), whose sum is σ = 38637222. Its totient is φ = 4601856.

The previous prime is 13805677. The next prime is 13805731. The reversal of 13805712 is 21750831.

13805712 is a `hidden beast` number, since 13 + 80 + 571 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 12278016 + 1527696 = 3504^2 + 1236^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 47793 + ... + 48080.

Almost surely, 2^13805712 is an apocalyptic number.

13805712 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13805712 is an abundant number, since it is smaller than the sum of its proper divisors (24831510).

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

13805712 is a wasteful number, since it uses less digits than its factorization.

13805712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95887 (or 95878 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The square root of 13805712 is about 3715.6038540189. The cubic root of 13805712 is about 239.8941199628.

The spelling of 13805712 in words is "thirteen million, eight hundred five thousand, seven hundred twelve".