11530988 has 12 divisors (see below), whose sum is σ = 23062032. Its totient is φ = 4941840.

The previous prime is 11530957. The next prime is 11530991. The reversal of 11530988 is 88903511.

11530988 is an admirable number.

It is a super-2 number, since 2×11530988² = 265927368512288, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 205883 + ... + 205938.

It is an arithmetic number, because the mean of its divisors is an integer number (1921836).

Almost surely, 2^11530988 is an apocalyptic number.

It is an amenable number.

11530988 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

11530988 is a wasteful number, since it uses less digits than its factorization.

11530988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411832 (or 411830 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 35.

The square root of 11530988 is about 3395.7308491693. The cubic root of 11530988 is about 225.9204303904.

The spelling of 11530988 in words is "eleven million, five hundred thirty thousand, nine hundred eighty-eight".