40638716 has 12 divisors (see below), whose sum is σ = 72179688. Its totient is φ = 20015952.

The previous prime is 40638673. The next prime is 40638727. The reversal of 40638716 is 61783604.

40638716 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 in 3 ways as a sum of consecutive naturals, for example, 75551 + ... + 76086.

It is an arithmetic number, because the mean of its divisors is an integer number (6014974).

Almost surely, 2^40638716 is an apocalyptic number.

It is an amenable number.

40638716 is a deficient number, since it is larger than the sum of its proper divisors (31540972).

40638716 is a wasteful number, since it uses less digits than its factorization.

40638716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151708 (or 151706 counting only the distinct ones).

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

The square root of 40638716 is about 6374.8502727515. The cubic root of 40638716 is about 343.8059005068.

The spelling of 40638716 in words is "forty million, six hundred thirty-eight thousand, seven hundred sixteen".