40688118 has 12 divisors (see below), whose sum is σ = 88157628. Its totient is φ = 13562700.

The previous prime is 40688117. The next prime is 40688119. The reversal of 40688118 is 81188604.

It is an interprime number because it is at equal distance from previous prime (40688117) and next prime (40688119).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40688117) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1130208 + ... + 1130243.

It is an arithmetic number, because the mean of its divisors is an integer number (7346469).

Almost surely, 2^40688118 is an apocalyptic number.

40688118 is an abundant number, since it is smaller than the sum of its proper divisors (47469510).

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

40688118 is a wasteful number, since it uses less digits than its factorization.

40688118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2260459 (or 2260456 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 36.

The square root of 40688118 is about 6378.7238535619. The cubic root of 40688118 is about 343.9451586904.

The spelling of 40688118 in words is "forty million, six hundred eighty-eight thousand, one hundred eighteen".