13140220 has 24 divisors (see below), whose sum is σ = 27720000. Its totient is φ = 5232192.

The previous prime is 13140209. The next prime is 13140221. The reversal of 13140220 is 2204131.

It is a self number, because there is not a number n which added to its sum of digits gives 13140220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13140221) 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, 3406 + ... + 6154.

It is an arithmetic number, because the mean of its divisors is an integer number (1155000).

Almost surely, 2^13140220 is an apocalyptic number.

13140220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13140220 is an abundant number, since it is smaller than the sum of its proper divisors (14579780).

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

13140220 is a wasteful number, since it uses less digits than its factorization.

13140220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2997 (or 2995 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 13140220 is about 3624.9441375006. The cubic root of 13140220 is about 235.9758425910.

Adding to 13140220 its reverse (2204131), we get a palindrome (15344351).

The spelling of 13140220 in words is "thirteen million, one hundred forty thousand, two hundred twenty".