11530566 has 32 divisors (see below), whose sum is σ = 26014080. Its totient is φ = 3784968.

The previous prime is 11530559. The next prime is 11530577. The reversal of 11530566 is 66503511.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2025 + ... + 5211.

It is an arithmetic number, because the mean of its divisors is an integer number (812940).

Almost surely, 2^11530566 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11530566, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13007040).

11530566 is an abundant number, since it is smaller than the sum of its proper divisors (14483514).

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

11530566 is a wasteful number, since it uses less digits than its factorization.

11530566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3265 (or 3259 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 11530566 is about 3395.6687117562. The cubic root of 11530566 is about 225.9176743507.

The spelling of 11530566 in words is "eleven million, five hundred thirty thousand, five hundred sixty-six".