13033220 has 24 divisors (see below), whose sum is σ = 28980504. Its totient is φ = 4906496.

The previous prime is 13033193. The next prime is 13033261. The reversal of 13033220 is 2233031.

13033220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 3694084 + 9339136 = 1922^2 + 3056^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13033195 and 13033204.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18827 + ... + 19506.

It is an arithmetic number, because the mean of its divisors is an integer number (1207521).

Almost surely, 2^13033220 is an apocalyptic number.

13033220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13033220 is an abundant number, since it is smaller than the sum of its proper divisors (15947284).

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

13033220 is a wasteful number, since it uses less digits than its factorization.

13033220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38359 (or 38357 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 14.

The square root of 13033220 is about 3610.1551213210. The cubic root of 13033220 is about 235.3335838946. Note that the first 3 decimals are identical.

Adding to 13033220 its reverse (2233031), we get a palindrome (15266251).

The spelling of 13033220 in words is "thirteen million, thirty-three thousand, two hundred twenty".