13220164 has 12 divisors (see below), whose sum is σ = 23514988. Its totient is φ = 6501600.

The previous prime is 13220131. The next prime is 13220177. The reversal of 13220164 is 46102231.

It can be written as a sum of positive squares in 2 ways, for example, as 202500 + 13017664 = 450^2 + 3608^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26847 + ... + 27334.

Almost surely, 2^13220164 is an apocalyptic number.

It is an amenable number.

13220164 is a deficient number, since it is larger than the sum of its proper divisors (10294824).

13220164 is a wasteful number, since it uses less digits than its factorization.

13220164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54246 (or 54244 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 13220164 is about 3635.9543451479. The cubic root of 13220164 is about 236.4534278001.

Adding to 13220164 its reverse (46102231), we get a palindrome (59322395).

The spelling of 13220164 in words is "thirteen million, two hundred twenty thousand, one hundred sixty-four".