11172928 has 42 divisors (see below), whose sum is σ = 24031194. Its totient is φ = 5151744.

The previous prime is 11172911. The next prime is 11172929. The reversal of 11172928 is 82927111.

It can be written as a sum of positive squares in 3 ways, for example, as 984064 + 10188864 = 992^2 + 3192^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 11172928.

It is not an unprimeable number, because it can be changed into a prime (11172929) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10300 + ... + 11332.

Almost surely, 2^11172928 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 11172928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12015597).

11172928 is an abundant number, since it is smaller than the sum of its proper divisors (12858266).

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

11172928 is a wasteful number, since it uses less digits than its factorization.

11172928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1071 (or 1048 counting only the distinct ones).

The product of its digits is 2016, while the sum is 31.

The square root of 11172928 is about 3342.5930054375. The cubic root of 11172928 is about 223.5573742434.

It can be divided in two parts, 11172 and 928, that added together give a square (12100 = 110²).

The spelling of 11172928 in words is "eleven million, one hundred seventy-two thousand, nine hundred twenty-eight".