40857968 has 20 divisors (see below), whose sum is σ = 79262040. Its totient is φ = 20403264.

The previous prime is 40857967. The next prime is 40857977. The reversal of 40857968 is 86975804.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40857967) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21971 + ... + 23757.

It is an arithmetic number, because the mean of its divisors is an integer number (3963102).

Almost surely, 2^40857968 is an apocalyptic number.

It is an amenable number.

40857968 is a deficient number, since it is larger than the sum of its proper divisors (38404072).

40857968 is a wasteful number, since it uses less digits than its factorization.

40857968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3224 (or 3218 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 47.

The square root of 40857968 is about 6392.0237796804. The cubic root of 40857968 is about 344.4230867861.

It can be divided in two parts, 4085796 and 8, that added together give a palindrome (4085804).

The spelling of 40857968 in words is "forty million, eight hundred fifty-seven thousand, nine hundred sixty-eight".