13212028 has 12 divisors (see below), whose sum is σ = 24126480. Its totient is φ = 6318752.

The previous prime is 13212013. The next prime is 13212053. The reversal of 13212028 is 82021231.

It is a junction number, because it is equal to n+sod(n) for n = 13211996 and 13212014.

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 in 3 ways as a sum of consecutive naturals, for example, 71713 + ... + 71896.

It is an arithmetic number, because the mean of its divisors is an integer number (2010540).

Almost surely, 2^13212028 is an apocalyptic number.

It is an amenable number.

13212028 is a deficient number, since it is larger than the sum of its proper divisors (10914452).

13212028 is a wasteful number, since it uses less digits than its factorization.

13212028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143636 (or 143634 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 13212028 is about 3634.8353470274. The cubic root of 13212028 is about 236.4049115116.

Adding to 13212028 its reverse (82021231), we get a palindrome (95233259).

The spelling of 13212028 in words is "thirteen million, two hundred twelve thousand, twenty-eight".