13333220 has 24 divisors (see below), whose sum is σ = 28089600. Its totient is φ = 5316192.

The previous prime is 13333217. The next prime is 13333223. The reversal of 13333220 is 2233331.

It is an interprime number because it is at equal distance from previous prime (13333217) and next prime (13333223).

It is not an unprimeable number, because it can be changed into a prime (13333223) 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, 6701 + ... + 8459.

It is an arithmetic number, because the mean of its divisors is an integer number (1170400).

Almost surely, 2^13333220 is an apocalyptic number.

13333220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13333220 is an abundant number, since it is smaller than the sum of its proper divisors (14756380).

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

13333220 is a wasteful number, since it uses less digits than its factorization.

13333220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2147 (or 2145 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 17.

The square root of 13333220 is about 3651.4681978623. The cubic root of 13333220 is about 237.1255484398.

Adding to 13333220 its reverse (2233331), we get a palindrome (15566551).

The spelling of 13333220 in words is "thirteen million, three hundred thirty-three thousand, two hundred twenty".