11045580 has 216 divisors, whose sum is σ = 41157648. Its totient is φ = 2193408.

The previous prime is 11045561. The next prime is 11045581. The reversal of 11045580 is 8554011.

It is a self number, because there is not a number n which added to its sum of digits gives 11045580.

It is not an unprimeable number, because it can be changed into a prime (11045581) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 649732 + ... + 649748.

Almost surely, 2^11045580 is an apocalyptic number.

11045580 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 11045580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20578824).

11045580 is an abundant number, since it is smaller than the sum of its proper divisors (30112068).

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

11045580 is a wasteful number, since it uses less digits than its factorization.

11045580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73 (or 47 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 24.

The square root of 11045580 is about 3323.4891304170. The cubic root of 11045580 is about 222.7047645777.

Adding to 11045580 its reverse (8554011), we get a palindrome (19599591).

The spelling of 11045580 in words is "eleven million, forty-five thousand, five hundred eighty".