40818180 has 96 divisors (see below), whose sum is σ = 126048384. Its totient is φ = 9805824.

The previous prime is 40818163. The next prime is 40818187. The reversal of 40818180 is 8181804.

It is a super-2 number, since 2×40818180² = 3332247637024800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (40818187) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32932 + ... + 34148.

It is an arithmetic number, because the mean of its divisors is an integer number (1313004).

Almost surely, 2^40818180 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 40818180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63024192).

40818180 is an abundant number, since it is smaller than the sum of its proper divisors (85230204).

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

40818180 is a wasteful number, since it uses less digits than its factorization.

40818180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1285 (or 1283 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 30.

The square root of 40818180 is about 6388.9107052768. The cubic root of 40818180 is about 344.3112493062.

Adding to 40818180 its reverse (8181804), we get a palindrome (48999984).

The spelling of 40818180 in words is "forty million, eight hundred eighteen thousand, one hundred eighty".