13029220 has 12 divisors (see below), whose sum is σ = 27361404. Its totient is φ = 5211680.

The previous prime is 13029197. The next prime is 13029223. The reversal of 13029220 is 2292031.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 8328996 + 4700224 = 2886^2 + 2168^2 .

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (13029223) 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 3 ways as a sum of consecutive naturals, for example, 325711 + ... + 325750.

It is an arithmetic number, because the mean of its divisors is an integer number (2280117).

Almost surely, 2^13029220 is an apocalyptic number.

13029220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13029220 is an abundant number, since it is smaller than the sum of its proper divisors (14332184).

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

13029220 is a wasteful number, since it uses less digits than its factorization.

13029220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 651470 (or 651468 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 13029220 is about 3609.6010859927. The cubic root of 13029220 is about 235.3095061749.

The spelling of 13029220 in words is "thirteen million, twenty-nine thousand, two hundred twenty".