11528280 has 96 divisors (see below), whose sum is σ = 38712960. Its totient is φ = 2972160.

The previous prime is 11528273. The next prime is 11528281. The reversal of 11528280 is 8282511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11528281) 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 23 ways as a sum of consecutive naturals, for example, 10644 + ... + 11676.

It is an arithmetic number, because the mean of its divisors is an integer number (403260).

Almost surely, 2^11528280 is an apocalyptic number.

11528280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11528280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19356480).

11528280 is an abundant number, since it is smaller than the sum of its proper divisors (27184680).

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

11528280 is a wasteful number, since it uses less digits than its factorization.

11528280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1081 (or 1074 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 27.

The square root of 11528280 is about 3395.3320897962. The cubic root of 11528280 is about 225.9027435445.

The spelling of 11528280 in words is "eleven million, five hundred twenty-eight thousand, two hundred eighty".