11727728 has 20 divisors (see below), whose sum is σ = 22829640. Its totient is φ = 5836224.

The previous prime is 11727721. The next prime is 11727733. The reversal of 11727728 is 82772711.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11727721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2018 + ... + 5246.

It is an arithmetic number, because the mean of its divisors is an integer number (1141482).

Almost surely, 2^11727728 is an apocalyptic number.

It is an amenable number.

11727728 is a deficient number, since it is larger than the sum of its proper divisors (11101912).

11727728 is a wasteful number, since it uses less digits than its factorization.

11727728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3464 (or 3458 counting only the distinct ones).

The product of its digits is 10976, while the sum is 35.

The square root of 11727728 is about 3424.5770541776. The cubic root of 11727728 is about 227.1980650169.

It can be divided in two parts, 11 and 727728, that multiplied together give a palindrome (8005008).

The spelling of 11727728 in words is "eleven million, seven hundred twenty-seven thousand, seven hundred twenty-eight".