40057688 has 16 divisors (see below), whose sum is σ = 81936360. Its totient is φ = 18208000.

The previous prime is 40057649. The next prime is 40057727. The reversal of 40057688 is 88675004.

40057688 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (40057649) and next prime (40057727).

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, 227513 + ... + 227688.

Almost surely, 2^40057688 is an apocalyptic number.

It is an amenable number.

40057688 is an abundant number, since it is smaller than the sum of its proper divisors (41878672).

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

40057688 is a wasteful number, since it uses less digits than its factorization.

40057688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 455218 (or 455214 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 38.

The square root of 40057688 is about 6329.1143140253. The cubic root of 40057688 is about 342.1595188493.

The spelling of 40057688 in words is "forty million, fifty-seven thousand, six hundred eighty-eight".