13220252 has 6 divisors (see below), whose sum is σ = 23135448. Its totient is φ = 6610124.

The previous prime is 13220243. The next prime is 13220261. The reversal of 13220252 is 25202231.

It is an interprime number because it is at equal distance from previous prime (13220243) and next prime (13220261).

It is a self number, because there is not a number n which added to its sum of digits gives 13220252.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 1652528 + ... + 1652535.

It is an arithmetic number, because the mean of its divisors is an integer number (3855908).

Almost surely, 2^13220252 is an apocalyptic number.

It is an amenable number.

13220252 is a deficient number, since it is larger than the sum of its proper divisors (9915196).

13220252 is a wasteful number, since it uses less digits than its factorization.

13220252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3305067 (or 3305065 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 13220252 is about 3635.9664464898. The cubic root of 13220252 is about 236.4539524496.

Adding to 13220252 its reverse (25202231), we get a palindrome (38422483).

The spelling of 13220252 in words is "thirteen million, two hundred twenty thousand, two hundred fifty-two".