40518712 has 32 divisors (see below), whose sum is σ = 83371680. Its totient is φ = 18345600.

The previous prime is 40518707. The next prime is 40518721. The reversal of 40518712 is 21781504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1837 + ... + 9187.

It is an arithmetic number, because the mean of its divisors is an integer number (2605365).

Almost surely, 2^40518712 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 40518712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41685840).

40518712 is an abundant number, since it is smaller than the sum of its proper divisors (42852968).

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

40518712 is a wasteful number, since it uses less digits than its factorization.

40518712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7423 (or 7419 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 28.

The square root of 40518712 is about 6365.4310144718. The cubic root of 40518712 is about 343.4671532473.

The spelling of 40518712 in words is "forty million, five hundred eighteen thousand, seven hundred twelve".