11556224 has 32 divisors (see below), whose sum is σ = 23225400. Its totient is φ = 5727232.

The previous prime is 11556221. The next prime is 11556257. The reversal of 11556224 is 42265511.

It is a tau number, because it is divible by the number of its divisors (32).

It is a junction number, because it is equal to n+sod(n) for n = 11556193 and 11556202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11556221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17207 + ... + 17865.

Almost surely, 2^11556224 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 11556224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11612700).

11556224 is an abundant number, since it is smaller than the sum of its proper divisors (11669176).

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

11556224 is an equidigital number, since it uses as much as digits as its factorization.

11556224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 810 (or 798 counting only the distinct ones).

The product of its digits is 2400, while the sum is 26.

The square root of 11556224 is about 3399.4446605291. Note that the first 3 decimals coincide. The cubic root of 11556224 is about 226.0851220844.

The spelling of 11556224 in words is "eleven million, five hundred fifty-six thousand, two hundred twenty-four".