40518036 has 48 divisors (see below), whose sum is σ = 113131200. Its totient is φ = 12466656.

The previous prime is 40518031. The next prime is 40518047. The reversal of 40518036 is 63081504.

It is a super-2 number, since 2×40518036² = 3283422482594592, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40518031) 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, 13026 + ... + 15833.

It is an arithmetic number, because the mean of its divisors is an integer number (2356900).

Almost surely, 2^40518036 is an apocalyptic number.

It is an amenable number.

40518036 is an abundant number, since it is smaller than the sum of its proper divisors (72613164).

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

40518036 is a wasteful number, since it uses less digits than its factorization.

40518036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28885 (or 28877 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 40518036 is about 6365.3779149395. The cubic root of 40518036 is about 343.4652431414.

The spelling of 40518036 in words is "forty million, five hundred eighteen thousand, thirty-six".