13128824 has 8 divisors (see below), whose sum is σ = 24616560. Its totient is φ = 6564408.

The previous prime is 13128809. The next prime is 13128827. The reversal of 13128824 is 42882131.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13128827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 820544 + ... + 820559.

It is an arithmetic number, because the mean of its divisors is an integer number (3077070).

Almost surely, 2^13128824 is an apocalyptic number.

It is an amenable number.

13128824 is a deficient number, since it is larger than the sum of its proper divisors (11487736).

13128824 is a wasteful number, since it uses less digits than its factorization.

13128824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1641109 (or 1641105 counting only the distinct ones).

The product of its digits is 3072, while the sum is 29.

The square root of 13128824 is about 3623.3719102516. The cubic root of 13128824 is about 235.9076053143.

The spelling of 13128824 in words is "thirteen million, one hundred twenty-eight thousand, eight hundred twenty-four".