40518382 has 4 divisors (see below), whose sum is σ = 60777576. Its totient is φ = 20259190.

The previous prime is 40518349. The next prime is 40518391. The reversal of 40518382 is 28381504.

40518382 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 10129594 + ... + 10129597.

It is an arithmetic number, because the mean of its divisors is an integer number (15194394).

Almost surely, 2^40518382 is an apocalyptic number.

40518382 is a deficient number, since it is larger than the sum of its proper divisors (20259194).

40518382 is a wasteful number, since it uses less digits than its factorization.

40518382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20259193.

The product of its (nonzero) digits is 7680, while the sum is 31.

The square root of 40518382 is about 6365.4050931579. The cubic root of 40518382 is about 343.4662208018.

Adding to 40518382 its reverse (28381504), we get a palindrome (68899886).

The spelling of 40518382 in words is "forty million, five hundred eighteen thousand, three hundred eighty-two".