40704688 has 40 divisors (see below), whose sum is σ = 83499120. Its totient is φ = 19169280.

The previous prime is 40704683. The next prime is 40704691. The reversal of 40704688 is 88640704.

It is not an unprimeable number, because it can be changed into a prime (40704683) 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, 77868 + ... + 78388.

It is an arithmetic number, because the mean of its divisors is an integer number (2087478).

Almost surely, 2^40704688 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40704688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41749560).

40704688 is an abundant number, since it is smaller than the sum of its proper divisors (42794432).

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

40704688 is a wasteful number, since it uses less digits than its factorization.

40704688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 805 (or 799 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 37.

The square root of 40704688 is about 6380.0225704930. The cubic root of 40704688 is about 343.9918422439.

The spelling of 40704688 in words is "forty million, seven hundred four thousand, six hundred eighty-eight".