11728117 has 2 divisors, whose sum is σ = 11728118. Its totient is φ = 11728116.

The previous prime is 11728099. The next prime is 11728127. The reversal of 11728117 is 71182711.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11329956 + 398161 = 3366^2 + 631^2 .

It is an emirp because it is prime and its reverse (71182711) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11728117 - 2¹⁵ = 11695349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11728127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5864058 + 5864059.

It is an arithmetic number, because the mean of its divisors is an integer number (5864059).

Almost surely, 2^11728117 is an apocalyptic number.

It is an amenable number.

11728117 is a deficient number, since it is larger than the sum of its proper divisors (1).

11728117 is an equidigital number, since it uses as much as digits as its factorization.

11728117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 784, while the sum is 28.

The square root of 11728117 is about 3424.6338490414. The cubic root of 11728117 is about 227.2005769860.

The spelling of 11728117 in words is "eleven million, seven hundred twenty-eight thousand, one hundred seventeen".