13132220 has 48 divisors (see below), whose sum is σ = 29030400. Its totient is φ = 4983360.

The previous prime is 13132219. The next prime is 13132237. The reversal of 13132220 is 2223131.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 13132195 and 13132204.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36401 + ... + 36759.

It is an arithmetic number, because the mean of its divisors is an integer number (604800).

Almost surely, 2^13132220 is an apocalyptic number.

13132220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13132220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14515200).

13132220 is an abundant number, since it is smaller than the sum of its proper divisors (15898180).

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

13132220 is a wasteful number, since it uses less digits than its factorization.

13132220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 458 (or 456 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 13132220 is about 3623.8405042165. The cubic root of 13132220 is about 235.9279441037.

Adding to 13132220 its reverse (2223131), we get a palindrome (15355351).

The spelling of 13132220 in words is "thirteen million, one hundred thirty-two thousand, two hundred twenty".