40505718 has 24 divisors (see below), whose sum is σ = 89047224. Its totient is φ = 12274240.

The previous prime is 40505671. The next prime is 40505719. The reversal of 40505718 is 81750504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40505719) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27171 + ... + 28622.

It is an arithmetic number, because the mean of its divisors is an integer number (3710301).

Almost surely, 2^40505718 is an apocalyptic number.

40505718 is an abundant number, since it is smaller than the sum of its proper divisors (48541506).

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

40505718 is a wasteful number, since it uses less digits than its factorization.

40505718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55820 (or 55809 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 30.

The square root of 40505718 is about 6364.4102633316. The cubic root of 40505718 is about 343.4304336747.

The spelling of 40505718 in words is "forty million, five hundred five thousand, seven hundred eighteen".