13420220 has 24 divisors (see below), whose sum is σ = 30745008. Its totient is φ = 4880000.

The previous prime is 13420193. The next prime is 13420223. The reversal of 13420220 is 2202431.

It is a junction number, because it is equal to n+sod(n) for n = 13420195 and 13420204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13420223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30281 + ... + 30720.

It is an arithmetic number, because the mean of its divisors is an integer number (1281042).

Almost surely, 2^13420220 is an apocalyptic number.

13420220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13420220 is an abundant number, since it is smaller than the sum of its proper divisors (17324788).

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

13420220 is a wasteful number, since it uses less digits than its factorization.

13420220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61021 (or 61019 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 13420220 is about 3663.3618439898. The cubic root of 13420220 is about 237.6401831693.

Adding to 13420220 its reverse (2202431), we get a palindrome (15622651).

The spelling of 13420220 in words is "thirteen million, four hundred twenty thousand, two hundred twenty".