11328821 has 8 divisors (see below), whose sum is σ = 13393920. Its totient is φ = 9375408.

The previous prime is 11328809. The next prime is 11328827. The reversal of 11328821 is 12882311.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-11328821 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11328827) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27701 + ... + 28106.

It is an arithmetic number, because the mean of its divisors is an integer number (1674240).

Almost surely, 2^11328821 is an apocalyptic number.

It is an amenable number.

11328821 is a deficient number, since it is larger than the sum of its proper divisors (2065099).

11328821 is an equidigital number, since it uses as much as digits as its factorization.

11328821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55843.

The product of its digits is 768, while the sum is 26.

The square root of 11328821 is about 3365.8313980353. The cubic root of 11328821 is about 224.5923218552.

The spelling of 11328821 in words is "eleven million, three hundred twenty-eight thousand, eight hundred twenty-one".