40381140 has 24 divisors (see below), whose sum is σ = 113067360. Its totient is φ = 10768288.

The previous prime is 40381139. The next prime is 40381157. The reversal of 40381140 is 4118304.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 336450 + ... + 336569.

It is an arithmetic number, because the mean of its divisors is an integer number (4711140).

Almost surely, 2^40381140 is an apocalyptic number.

It is an amenable number.

40381140 is an abundant number, since it is smaller than the sum of its proper divisors (72686220).

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

40381140 is a wasteful number, since it uses less digits than its factorization.

40381140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 673031 (or 673029 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 40381140 is about 6354.6156453400. The cubic root of 40381140 is about 343.0779911446.

Adding to 40381140 its reverse (4118304), we get a palindrome (44499444).

The spelling of 40381140 in words is "forty million, three hundred eighty-one thousand, one hundred forty".