13242220 has 12 divisors (see below), whose sum is σ = 27808704. Its totient is φ = 5296880.

The previous prime is 13242199. The next prime is 13242253. The reversal of 13242220 is 2224231.

13242220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 13242194 and 13242203.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 331036 + ... + 331075.

It is an arithmetic number, because the mean of its divisors is an integer number (2317392).

Almost surely, 2^13242220 is an apocalyptic number.

13242220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13242220 is an abundant number, since it is smaller than the sum of its proper divisors (14566484).

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

13242220 is a wasteful number, since it uses less digits than its factorization.

13242220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 662120 (or 662118 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 13242220 is about 3638.9861225347. The cubic root of 13242220 is about 236.5848512631.

Adding to 13242220 its reverse (2224231), we get a palindrome (15466451).

The spelling of 13242220 in words is "thirteen million, two hundred forty-two thousand, two hundred twenty".