11728065 has 16 divisors (see below), whose sum is σ = 18864000. Its totient is φ = 6221952.

The previous prime is 11728061. The next prime is 11728099. The reversal of 11728065 is 56082711.

11728065 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11728065 - 2² = 11728061 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11728061) 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, 1021 + ... + 4949.

It is an arithmetic number, because the mean of its divisors is an integer number (1179000).

Almost surely, 2^11728065 is an apocalyptic number.

11728065 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11728065 is a deficient number, since it is larger than the sum of its proper divisors (7135935).

11728065 is a wasteful number, since it uses less digits than its factorization.

11728065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4136.

The product of its (nonzero) digits is 3360, while the sum is 30.

The square root of 11728065 is about 3424.6262569805. The cubic root of 11728065 is about 227.2002411990.

It can be divided in two parts, 117 and 28065, that added together give a palindrome (28182).

The spelling of 11728065 in words is "eleven million, seven hundred twenty-eight thousand, sixty-five".