40222228 has 12 divisors (see below), whose sum is σ = 70613172. Its totient is φ = 20047040.

The previous prime is 40222223. The next prime is 40222249. The reversal of 40222228 is 82222204.

It is a happy number.

40222228 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1633284 + 38588944 = 1278^2 + 6212^2 .

It is a junction number, because it is equal to n+sod(n) for n = 40222199 and 40222208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40222223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14593 + ... + 17128.

It is an arithmetic number, because the mean of its divisors is an integer number (5884431).

Almost surely, 2^40222228 is an apocalyptic number.

It is an amenable number.

40222228 is a deficient number, since it is larger than the sum of its proper divisors (30390944).

40222228 is a wasteful number, since it uses less digits than its factorization.

40222228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32042 (or 32040 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 22.

The square root of 40222228 is about 6342.0996523234. The cubic root of 40222228 is about 342.6273609492.

The spelling of 40222228 in words is "forty million, two hundred twenty-two thousand, two hundred twenty-eight".