40388568 has 64 divisors (see below), whose sum is σ = 112060800. Its totient is φ = 12026880.

The previous prime is 40388519. The next prime is 40388599. The reversal of 40388568 is 86588304.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14280 + ... + 16872.

It is an arithmetic number, because the mean of its divisors is an integer number (1750950).

Almost surely, 2^40388568 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 40388568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56030400).

40388568 is an abundant number, since it is smaller than the sum of its proper divisors (71672232).

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

40388568 is a wasteful number, since it uses less digits than its factorization.

40388568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2672 (or 2668 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 42.

The square root of 40388568 is about 6355.2000755287. The cubic root of 40388568 is about 343.0990259402.

The spelling of 40388568 in words is "forty million, three hundred eighty-eight thousand, five hundred sixty-eight".