13605222 has 16 divisors (see below), whose sum is σ = 27555840. Its totient is φ = 4477512.

The previous prime is 13605211. The next prime is 13605247. The reversal of 13605222 is 22250631.

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, 13878 + ... + 14825.

It is an arithmetic number, because the mean of its divisors is an integer number (1722240).

Almost surely, 2^13605222 is an apocalyptic number.

13605222 is an abundant number, since it is smaller than the sum of its proper divisors (13950618).

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

13605222 is a wasteful number, since it uses less digits than its factorization.

13605222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28787.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 13605222 is about 3688.5257217485. The cubic root of 13605222 is about 238.7271853056.

Adding to 13605222 its reverse (22250631), we get a palindrome (35855853).

The spelling of 13605222 in words is "thirteen million, six hundred five thousand, two hundred twenty-two".