40687136 has 24 divisors (see below), whose sum is σ = 91546560. Its totient is φ = 17437248.

The previous prime is 40687091. The next prime is 40687139. The reversal of 40687136 is 63178604.

It is a junction number, because it is equal to n+sod(n) for n = 40687096 and 40687105.

It is not an unprimeable number, because it can be changed into a prime (40687139) by changing a digit.

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, 90596 + ... + 91043.

It is an arithmetic number, because the mean of its divisors is an integer number (3814440).

Almost surely, 2^40687136 is an apocalyptic number.

It is an amenable number.

40687136 is an abundant number, since it is smaller than the sum of its proper divisors (50859424).

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

40687136 is a wasteful number, since it uses less digits than its factorization.

40687136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181656 (or 181648 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 40687136 is about 6378.6468784531. The cubic root of 40687136 is about 343.9423916511.

The spelling of 40687136 in words is "forty million, six hundred eighty-seven thousand, one hundred thirty-six".