13248728 has 16 divisors (see below), whose sum is σ = 25310880. Its totient is φ = 6499168.

The previous prime is 13248727. The next prime is 13248731. The reversal of 13248728 is 82784231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13248727) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15200 + ... + 16047.

It is an arithmetic number, because the mean of its divisors is an integer number (1581930).

Almost surely, 2^13248728 is an apocalyptic number.

It is an amenable number.

13248728 is a deficient number, since it is larger than the sum of its proper divisors (12062152).

13248728 is a wasteful number, since it uses less digits than its factorization.

13248728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31306 (or 31302 counting only the distinct ones).

The product of its digits is 21504, while the sum is 35.

The square root of 13248728 is about 3639.8802178094. The cubic root of 13248728 is about 236.6236021183.

The spelling of 13248728 in words is "thirteen million, two hundred forty-eight thousand, seven hundred twenty-eight".