40237218 has 24 divisors (see below), whose sum is σ = 99635328. Its totient is φ = 11496312.

The previous prime is 40237201. The next prime is 40237237. The reversal of 40237218 is 81273204.

40237218 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 40237191 and 40237200.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 159546 + ... + 159797.

It is an arithmetic number, because the mean of its divisors is an integer number (4151472).

Almost surely, 2^40237218 is an apocalyptic number.

40237218 is an abundant number, since it is smaller than the sum of its proper divisors (59398110).

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

40237218 is a wasteful number, since it uses less digits than its factorization.

40237218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319358 (or 319355 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 40237218 is about 6343.2813275150. The cubic root of 40237218 is about 342.6699190612.

The spelling of 40237218 in words is "forty million, two hundred thirty-seven thousand, two hundred eighteen".