11728506 has 16 divisors (see below), whose sum is σ = 23557248. Its totient is φ = 3892800.

The previous prime is 11728439. The next prime is 11728523. The reversal of 11728506 is 60582711.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2610 + ... + 5501.

It is an arithmetic number, because the mean of its divisors is an integer number (1472328).

Almost surely, 2^11728506 is an apocalyptic number.

11728506 is an abundant number, since it is smaller than the sum of its proper divisors (11828742).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11728506 is a wasteful number, since it uses less digits than its factorization.

11728506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8357.

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

The square root of 11728506 is about 3424.6906429632. The cubic root of 11728506 is about 227.2030888995.

The spelling of 11728506 in words is "eleven million, seven hundred twenty-eight thousand, five hundred six".