40355688 has 32 divisors (see below), whose sum is σ = 106824960. Its totient is φ = 12660480.

The previous prime is 40355683. The next prime is 40355699. The reversal of 40355688 is 88655304.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (40355681) 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, 49048 + ... + 49863.

It is an arithmetic number, because the mean of its divisors is an integer number (3338280).

Almost surely, 2^40355688 is an apocalyptic number.

It is an amenable number.

40355688 is an abundant number, since it is smaller than the sum of its proper divisors (66469272).

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

40355688 is a wasteful number, since it uses less digits than its factorization.

40355688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98937 (or 98933 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 39.

The square root of 40355688 is about 6352.6126908541. The cubic root of 40355688 is about 343.0058959680.

The spelling of 40355688 in words is "forty million, three hundred fifty-five thousand, six hundred eighty-eight".