40818168 has 64 divisors (see below), whose sum is σ = 114832800. Its totient is φ = 13600224.

The previous prime is 40818163. The next prime is 40818187. The reversal of 40818168 is 86181804.

It is a super-2 number, since 2×40818168² = 3332245677752448, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40818163) 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, 16330 + ... + 18662.

Almost surely, 2^40818168 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40818168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57416400).

40818168 is an abundant number, since it is smaller than the sum of its proper divisors (74014632).

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

40818168 is an equidigital number, since it uses as much as digits as its factorization.

40818168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2360 (or 2338 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 36.

The square root of 40818168 is about 6388.9097661495. The cubic root of 40818168 is about 344.3112155652.

The spelling of 40818168 in words is "forty million, eight hundred eighteen thousand, one hundred sixty-eight".