13412220 has 48 divisors (see below), whose sum is σ = 39191040. Its totient is φ = 3420736.

The previous prime is 13412177. The next prime is 13412221. The reversal of 13412220 is 2221431.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 13412220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13412221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3480 + ... + 6239.

It is an arithmetic number, because the mean of its divisors is an integer number (816480).

Almost surely, 2^13412220 is an apocalyptic number.

13412220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13412220 is an abundant number, since it is smaller than the sum of its proper divisors (25778820).

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

13412220 is a wasteful number, since it uses less digits than its factorization.

13412220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9754 (or 9752 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 13412220 is about 3662.2697879867. The cubic root of 13412220 is about 237.5929534579.

Adding to 13412220 its reverse (2221431), we get a palindrome (15633651).

The spelling of 13412220 in words is "thirteen million, four hundred twelve thousand, two hundred twenty".