11985228 has 36 divisors (see below), whose sum is σ = 30754360. Its totient is φ = 3934656.

The previous prime is 11985203. The next prime is 11985229. The reversal of 11985228 is 82258911.

11985228 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 11985192 and 11985201.

It is not an unprimeable number, because it can be changed into a prime (11985229) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 73 + ... + 4896.

Almost surely, 2^11985228 is an apocalyptic number.

11985228 is a gapful number since it is divisible by the number (18) 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 11985228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15377180).

11985228 is an abundant number, since it is smaller than the sum of its proper divisors (18769132).

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

11985228 is a wasteful number, since it uses less digits than its factorization.

11985228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5046 (or 5041 counting only the distinct ones).

The product of its digits is 11520, while the sum is 36.

The square root of 11985228 is about 3461.9688040189. The cubic root of 11985228 is about 228.8488670542.

The spelling of 11985228 in words is "eleven million, nine hundred eighty-five thousand, two hundred twenty-eight".