226571328 has 126 divisors (see below), whose sum is σ = 666465774. Its totient is φ = 73586688.

The previous prime is 226571327. The next prime is 226571347. The reversal of 226571328 is 823175622.

226571328 is a `hidden beast` number, since 2 + 265 + 71 + 328 = 666.

It can be written as a sum of positive squares in only one way, i.e., 128323584 + 98247744 = 11328^2 + 9912^2 .

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 = 226571292 and 226571301.

It is not an unprimeable number, because it can be changed into a prime (226571327) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2005000 + ... + 2005112.

Almost surely, 2^226571328 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 226571328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (333232887).

226571328 is an abundant number, since it is smaller than the sum of its proper divisors (439894446).

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

226571328 is a wasteful number, since it uses less digits than its factorization.

226571328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249 (or 177 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 226571328 is about 15052.2864708323. The cubic root of 226571328 is about 609.6327880353.

The spelling of 226571328 in words is "two hundred twenty-six million, five hundred seventy-one thousand, three hundred twenty-eight".