40228866 has 32 divisors (see below), whose sum is σ = 89760000. Its totient is φ = 13355280.

The previous prime is 40228861. The next prime is 40228873. The reversal of 40228866 is 66882204.

It is a self number, because there is not a number n which added to its sum of digits gives 40228866.

It is not an unprimeable number, because it can be changed into a prime (40228861) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13260 + ... + 16008.

It is an arithmetic number, because the mean of its divisors is an integer number (2805000).

Almost surely, 2^40228866 is an apocalyptic number.

40228866 is an abundant number, since it is smaller than the sum of its proper divisors (49531134).

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

40228866 is a wasteful number, since it uses less digits than its factorization.

40228866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3031 (or 3025 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 36.

The square root of 40228866 is about 6342.6229589973. The cubic root of 40228866 is about 342.6462082005.

The spelling of 40228866 in words is "forty million, two hundred twenty-eight thousand, eight hundred sixty-six".