11728159 has 4 divisors (see below), whose sum is σ = 11813904. Its totient is φ = 11642416.

The previous prime is 11728141. The next prime is 11728177. The reversal of 11728159 is 95182711.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (11728141) and next prime (11728177).

It is a cyclic number.

It is not a de Polignac number, because 11728159 - 2⁵ = 11728127 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11728559) 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, 42667 + ... + 42940.

It is an arithmetic number, because the mean of its divisors is an integer number (2953476).

Almost surely, 2^11728159 is an apocalyptic number.

11728159 is a deficient number, since it is larger than the sum of its proper divisors (85745).

11728159 is an equidigital number, since it uses as much as digits as its factorization.

11728159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85744.

The product of its digits is 5040, while the sum is 34.

The square root of 11728159 is about 3424.6399810783. The cubic root of 11728159 is about 227.2008481978.

The spelling of 11728159 in words is "eleven million, seven hundred twenty-eight thousand, one hundred fifty-nine".