13299728 has 40 divisors (see below), whose sum is σ = 28414848. Its totient is φ = 5991552.

The previous prime is 13299707. The next prime is 13299751. The reversal of 13299728 is 82799231.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8201 + ... + 9687.

Almost surely, 2^13299728 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13299728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14207424).

13299728 is an abundant number, since it is smaller than the sum of its proper divisors (15115120).

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

13299728 is a wasteful number, since it uses less digits than its factorization.

13299728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1551 (or 1545 counting only the distinct ones).

The product of its digits is 54432, while the sum is 41.

The square root of 13299728 is about 3646.8792137936. The cubic root of 13299728 is about 236.9268350533.

The spelling of 13299728 in words is "thirteen million, two hundred ninety-nine thousand, seven hundred twenty-eight".