40166228 has 24 divisors (see below), whose sum is σ = 74508000. Its totient is φ = 18893088.

The previous prime is 40166227. The next prime is 40166237. The reversal of 40166228 is 82266104.

It is a super-2 number, since 2×40166228² = 3226651743495968, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40166228.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40166227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9551 + ... + 13097.

It is an arithmetic number, because the mean of its divisors is an integer number (3104500).

Almost surely, 2^40166228 is an apocalyptic number.

It is an amenable number.

40166228 is a deficient number, since it is larger than the sum of its proper divisors (34341772).

40166228 is a wasteful number, since it uses less digits than its factorization.

40166228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3719 (or 3717 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 40166228 is about 6337.6831728953. The cubic root of 40166228 is about 342.4682777376.

The spelling of 40166228 in words is "forty million, one hundred sixty-six thousand, two hundred twenty-eight".