13032220 has 24 divisors (see below), whose sum is σ = 27435744. Its totient is φ = 5199936.

The previous prime is 13032209. The next prime is 13032221. The reversal of 13032220 is 2223031.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 13032220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13032221) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 14422 + ... + 15298.

It is an arithmetic number, because the mean of its divisors is an integer number (1143156).

Almost surely, 2^13032220 is an apocalyptic number.

13032220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13032220 is an abundant number, since it is smaller than the sum of its proper divisors (14403524).

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

13032220 is a wasteful number, since it uses less digits than its factorization.

13032220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1629 (or 1627 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 13032220 is about 3610.0166204604. The cubic root of 13032220 is about 235.3275649266.

Adding to 13032220 its reverse (2223031), we get a palindrome (15255251).

The spelling of 13032220 in words is "thirteen million, thirty-two thousand, two hundred twenty".