40518396 has 36 divisors (see below), whose sum is σ = 104106184. Its totient is φ = 13284000.

The previous prime is 40518391. The next prime is 40518409. The reversal of 40518396 is 69381504.

40518396 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 40518396.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40518391) 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 11 ways as a sum of consecutive naturals, for example, 7030 + ... + 11421.

Almost surely, 2^40518396 is an apocalyptic number.

It is an amenable number.

40518396 is an abundant number, since it is smaller than the sum of its proper divisors (63587788).

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

40518396 is a wasteful number, since it uses less digits than its factorization.

40518396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18522 (or 18517 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 40518396 is about 6365.4061928521. The cubic root of 40518396 is about 343.4662603602.

The spelling of 40518396 in words is "forty million, five hundred eighteen thousand, three hundred ninety-six".