40007688 has 32 divisors (see below), whose sum is σ = 114308160. Its totient is φ = 11430720.

The previous prime is 40007683. The next prime is 40007707. The reversal of 40007688 is 88670004.

It is not an unprimeable number, because it can be changed into a prime (40007683) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118903 + ... + 119238.

It is an arithmetic number, because the mean of its divisors is an integer number (3572130).

Almost surely, 2^40007688 is an apocalyptic number.

It is an amenable number.

40007688 is an abundant number, since it is smaller than the sum of its proper divisors (74300472).

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

40007688 is a wasteful number, since it uses less digits than its factorization.

40007688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238157 (or 238153 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 40007688 is about 6325.1630809016. The cubic root of 40007688 is about 342.0170984236.

The spelling of 40007688 in words is "forty million, seven thousand, six hundred eighty-eight".