13021424 has 20 divisors (see below), whose sum is σ = 27170136. Its totient is φ = 6009792.

The previous prime is 13021399. The next prime is 13021429. The reversal of 13021424 is 42412031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13021429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31094 + ... + 31509.

Almost surely, 2^13021424 is an apocalyptic number.

It is an amenable number.

13021424 is an abundant number, since it is smaller than the sum of its proper divisors (14148712).

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

13021424 is a wasteful number, since it uses less digits than its factorization.

13021424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62624 (or 62618 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 13021424 is about 3608.5210266812. The cubic root of 13021424 is about 235.2625645336.

Adding to 13021424 its reverse (42412031), we get a palindrome (55433455).

The spelling of 13021424 in words is "thirteen million, twenty-one thousand, four hundred twenty-four".