13424020 has 12 divisors (see below), whose sum is σ = 28190484. Its totient is φ = 5369600.

The previous prime is 13424017. The next prime is 13424039. The reversal of 13424020 is 2042431.

13424020 = 939² + 940² + ... + 953².

13424020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 2547216 + 10876804 = 1596^2 + 3298^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13423985 and 13424003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 335581 + ... + 335620.

It is an arithmetic number, because the mean of its divisors is an integer number (2349207).

Almost surely, 2^13424020 is an apocalyptic number.

13424020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13424020 is an abundant number, since it is smaller than the sum of its proper divisors (14766464).

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

13424020 is a wasteful number, since it uses less digits than its factorization.

13424020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 671210 (or 671208 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 13424020 is about 3663.8804565651. The cubic root of 13424020 is about 237.6626107072.

Adding to 13424020 its reverse (2042431), we get a palindrome (15466451).

The spelling of 13424020 in words is "thirteen million, four hundred twenty-four thousand, twenty".