40081508 has 12 divisors (see below), whose sum is σ = 72038652. Its totient is φ = 19499040.

The previous prime is 40081499. The next prime is 40081513. The reversal of 40081508 is 80518004.

It can be written as a sum of positive squares in 2 ways, for example, as 18939904 + 21141604 = 4352^2 + 4598^2 .

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 3 ways as a sum of consecutive naturals, for example, 135263 + ... + 135558.

It is an arithmetic number, because the mean of its divisors is an integer number (6003221).

Almost surely, 2^40081508 is an apocalyptic number.

It is an amenable number.

40081508 is a deficient number, since it is larger than the sum of its proper divisors (31957144).

40081508 is a wasteful number, since it uses less digits than its factorization.

40081508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270862 (or 270860 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 26.

The square root of 40081508 is about 6330.9958142460. The cubic root of 40081508 is about 342.2273262640.

The spelling of 40081508 in words is "forty million, eighty-one thousand, five hundred eight".