40317872 has 20 divisors (see below), whose sum is σ = 89275536. Its totient is φ = 17279040.

The previous prime is 40317857. The next prime is 40317877. The reversal of 40317872 is 27871304.

It is a happy number.

40317872 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (40317877) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 179879 + ... + 180102.

Almost surely, 2^40317872 is an apocalyptic number.

It is an amenable number.

40317872 is an abundant number, since it is smaller than the sum of its proper divisors (48957664).

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

40317872 is a wasteful number, since it uses less digits than its factorization.

40317872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359996 (or 359990 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 40317872 is about 6349.6355800943. The cubic root of 40317872 is about 342.8987226027.

The spelling of 40317872 in words is "forty million, three hundred seventeen thousand, eight hundred seventy-two".