13432220 has 24 divisors (see below), whose sum is σ = 29181600. Its totient is φ = 5187392.

The previous prime is 13432213. The next prime is 13432229. The reversal of 13432220 is 2223431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13432229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11000 + ... + 12159.

It is an arithmetic number, because the mean of its divisors is an integer number (1215900).

Almost surely, 2^13432220 is an apocalyptic number.

13432220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13432220 is an abundant number, since it is smaller than the sum of its proper divisors (15749380).

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

13432220 is a wasteful number, since it uses less digits than its factorization.

13432220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23197 (or 23195 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 13432220 is about 3664.9993178717. Note that the first 3 decimals coincide. The cubic root of 13432220 is about 237.7109925563.

Adding to 13432220 its reverse (2223431), we get a palindrome (15655651).

The spelling of 13432220 in words is "thirteen million, four hundred thirty-two thousand, two hundred twenty".