13705212 has 24 divisors (see below), whose sum is σ = 32041296. Its totient is φ = 4559488.

The previous prime is 13705187. The next prime is 13705231. The reversal of 13705212 is 21250731.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8848 + ... + 10280.

It is an arithmetic number, because the mean of its divisors is an integer number (1335054).

Almost surely, 2^13705212 is an apocalyptic number.

13705212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13705212 is an abundant number, since it is smaller than the sum of its proper divisors (18336084).

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

13705212 is a wasteful number, since it uses less digits than its factorization.

13705212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2237 (or 2235 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 21.

The square root of 13705212 is about 3702.0551049383. The cubic root of 13705212 is about 239.3105909874.

Adding to 13705212 its reverse (21250731), we get a palindrome (34955943).

The spelling of 13705212 in words is "thirteen million, seven hundred five thousand, two hundred twelve".