11578728 has 64 divisors (see below), whose sum is σ = 33909120. Its totient is φ = 3227520.

The previous prime is 11578727. The next prime is 11578747. The reversal of 11578728 is 82787511.

It is not an unprimeable number, because it can be changed into a prime (11578727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 282388 + ... + 282428.

It is an arithmetic number, because the mean of its divisors is an integer number (529830).

Almost surely, 2^11578728 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11578728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16954560).

11578728 is an abundant number, since it is smaller than the sum of its proper divisors (22330392).

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

11578728 is an frugal number, since it uses more digits than its factorization.

11578728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139 (or 53 counting only the distinct ones).

The product of its digits is 31360, while the sum is 39.

The square root of 11578728 is about 3402.7530030844. The cubic root of 11578728 is about 226.2317824633.

The spelling of 11578728 in words is "eleven million, five hundred seventy-eight thousand, seven hundred twenty-eight".