13107728 has 20 divisors (see below), whose sum is σ = 25498368. Its totient is φ = 6527520.

The previous prime is 13107727. The next prime is 13107751. The reversal of 13107728 is 82770131.

It is a self number, because there is not a number n which added to its sum of digits gives 13107728.

It is not an unprimeable number, because it can be changed into a prime (13107727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2825 + ... + 5847.

Almost surely, 2^13107728 is an apocalyptic number.

It is an amenable number.

13107728 is a deficient number, since it is larger than the sum of its proper divisors (12390640).

13107728 is a wasteful number, since it uses less digits than its factorization.

13107728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3302 (or 3296 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 29.

The square root of 13107728 is about 3620.4596393276. The cubic root of 13107728 is about 235.7811818350.

Adding to 13107728 its reverse (82770131), we get a palindrome (95877859).

It can be divided in two parts, 13107 and 728, that multiplied together give a triangular number (9541896 = T₄₃₆₈).

The spelling of 13107728 in words is "thirteen million, one hundred seven thousand, seven hundred twenty-eight".