11728017 has 16 divisors (see below), whose sum is σ = 19857280. Its totient is φ = 6701616.

The previous prime is 11728007. The next prime is 11728021. The reversal of 11728017 is 71082711.

11728017 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11728017 - 2¹⁰ = 11726993 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11728007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30838 + ... + 31215.

It is an arithmetic number, because the mean of its divisors is an integer number (1241080).

Almost surely, 2^11728017 is an apocalyptic number.

It is an amenable number.

11728017 is a deficient number, since it is larger than the sum of its proper divisors (8129263).

11728017 is an equidigital number, since it uses as much as digits as its factorization.

11728017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62069 (or 62063 counting only the distinct ones).

The product of its (nonzero) digits is 784, while the sum is 27.

The square root of 11728017 is about 3424.6192489093. The cubic root of 11728017 is about 227.1999312409.

The spelling of 11728017 in words is "eleven million, seven hundred twenty-eight thousand, seventeen".