13684212 has 18 divisors (see below), whose sum is σ = 34590738. Its totient is φ = 4561392.

The previous prime is 13684189. The next prime is 13684217. The reversal of 13684212 is 21248631.

It can be written as a sum of positive squares in only one way, i.e., 12916836 + 767376 = 3594^2 + 876^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13684217) 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 5 ways as a sum of consecutive naturals, for example, 190023 + ... + 190094.

Almost surely, 2^13684212 is an apocalyptic number.

13684212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13684212 is an abundant number, since it is smaller than the sum of its proper divisors (20906526).

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

13684212 is a wasteful number, since it uses less digits than its factorization.

13684212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380127 (or 380122 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

The square root of 13684212 is about 3699.2177551477. The cubic root of 13684212 is about 239.1882995213.

It can be divided in two parts, 136 and 84212, that added together give a palindrome (84348).

The spelling of 13684212 in words is "thirteen million, six hundred eighty-four thousand, two hundred twelve".