40418312 has 32 divisors (see below), whose sum is σ = 83851200. Its totient is φ = 18110400.

The previous prime is 40418311. The next prime is 40418317. The reversal of 40418312 is 21381404.

It is not an unprimeable number, because it can be changed into a prime (40418311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3014 + ... + 9482.

It is an arithmetic number, because the mean of its divisors is an integer number (2620350).

Almost surely, 2^40418312 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 40418312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41925600).

40418312 is an abundant number, since it is smaller than the sum of its proper divisors (43432888).

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

40418312 is a wasteful number, since it uses less digits than its factorization.

40418312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6557 (or 6553 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 40418312 is about 6357.5397757309. The cubic root of 40418312 is about 343.1832299099.

Adding to 40418312 its reverse (21381404), we get a palindrome (61799716).

The spelling of 40418312 in words is "forty million, four hundred eighteen thousand, three hundred twelve".