40866156 has 18 divisors (see below), whose sum is σ = 103300652. Its totient is φ = 13622040.

The previous prime is 40866151. The next prime is 40866179. The reversal of 40866156 is 65166804.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 1135171 = 40866156 / (4 + 0 + 8 + 6 + 6 + 1 + 5 + 6).

It is a self number, because there is not a number n which added to its sum of digits gives 40866156.

It is not an unprimeable number, because it can be changed into a prime (40866151) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 567550 + ... + 567621.

Almost surely, 2^40866156 is an apocalyptic number.

It is an amenable number.

40866156 is an abundant number, since it is smaller than the sum of its proper divisors (62434496).

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

40866156 is a wasteful number, since it uses less digits than its factorization.

40866156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1135181 (or 1135176 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 40866156 is about 6392.6642333224. The cubic root of 40866156 is about 344.4460928892.

It can be divided in two parts, 408 and 66156, that added together give a square (66564 = 258²).

The spelling of 40866156 in words is "forty million, eight hundred sixty-six thousand, one hundred fifty-six".