13801205 has 16 divisors (see below), whose sum is σ = 18144000. Its totient is φ = 9994560.

The previous prime is 13801199. The next prime is 13801213. The reversal of 13801205 is 50210831.

It is not a de Polignac number, because 13801205 - 2⁸ = 13800949 is a prime.

It is a Curzon number.

It is a congruent number.

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, 18836 + ... + 19554.

It is an arithmetic number, because the mean of its divisors is an integer number (1134000).

Almost surely, 2^13801205 is an apocalyptic number.

It is an amenable number.

13801205 is a deficient number, since it is larger than the sum of its proper divisors (4342795).

13801205 is a wasteful number, since it uses less digits than its factorization.

13801205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1084.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 13801205 is about 3714.9973082090. The cubic root of 13801205 is about 239.8680119172.

Adding to 13801205 its sum of digits (20), we get a square (13801225 = 3715²).

The spelling of 13801205 in words is "thirteen million, eight hundred one thousand, two hundred five".