13424420 has 24 divisors (see below), whose sum is σ = 28534464. Its totient is φ = 5304416.

The previous prime is 13424413. The next prime is 13424429. The reversal of 13424420 is 2442431.

13424420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 13424392 and 13424401.

It is not an unprimeable number, because it can be changed into a prime (13424429) 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, 2384 + ... + 5703.

It is an arithmetic number, because the mean of its divisors is an integer number (1188936).

Almost surely, 2^13424420 is an apocalyptic number.

13424420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13424420 is an abundant number, since it is smaller than the sum of its proper divisors (15110044).

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

13424420 is a wasteful number, since it uses less digits than its factorization.

13424420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8179 (or 8177 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 13424420 is about 3663.9350430923. The cubic root of 13424420 is about 237.6649712544.

Adding to 13424420 its reverse (2442431), we get a palindrome (15866851).

The spelling of 13424420 in words is "thirteen million, four hundred twenty-four thousand, four hundred twenty".