13755728 has 20 divisors (see below), whose sum is σ = 30459360. Its totient is φ = 5895264.

The previous prime is 13755727. The next prime is 13755739. The reversal of 13755728 is 82755731.

It is a happy number.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 13755691 and 13755700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13755727) 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, 61298 + ... + 61521.

It is an arithmetic number, because the mean of its divisors is an integer number (1522968).

Almost surely, 2^13755728 is an apocalyptic number.

It is an amenable number.

13755728 is an abundant number, since it is smaller than the sum of its proper divisors (16703632).

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

13755728 is a wasteful number, since it uses less digits than its factorization.

13755728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122834 (or 122828 counting only the distinct ones).

The product of its digits is 58800, while the sum is 38.

The square root of 13755728 is about 3708.8715264889. The cubic root of 13755728 is about 239.6042552080.

The spelling of 13755728 in words is "thirteen million, seven hundred fifty-five thousand, seven hundred twenty-eight".