40206166 has 96 divisors (see below), whose sum is σ = 87333120. Its totient is φ = 13608000.

The previous prime is 40206157. The next prime is 40206169. The reversal of 40206166 is 66160204.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 40206166.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40206169) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 266191 + ... + 266341.

It is an arithmetic number, because the mean of its divisors is an integer number (909720).

Almost surely, 2^40206166 is an apocalyptic number.

40206166 is an abundant number, since it is smaller than the sum of its proper divisors (47126954).

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

40206166 is a wasteful number, since it uses less digits than its factorization.

40206166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210 (or 203 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 40206166 is about 6340.8332260043. The cubic root of 40206166 is about 342.5817475852.

The spelling of 40206166 in words is "forty million, two hundred six thousand, one hundred sixty-six".