40188316 has 48 divisors (see below), whose sum is σ = 85155840. Its totient is φ = 16228800.

The previous prime is 40188301. The next prime is 40188319. The reversal of 40188316 is 61388104.

40188316 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40188319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34341 + ... + 35491.

It is an arithmetic number, because the mean of its divisors is an integer number (1774080).

Almost surely, 2^40188316 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 40188316, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42577920).

40188316 is an abundant number, since it is smaller than the sum of its proper divisors (44967524).

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

40188316 is a wasteful number, since it uses less digits than its factorization.

40188316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1234 (or 1232 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 40188316 is about 6339.4255260236. The cubic root of 40188316 is about 342.5310423495.

It can be divided in two parts, 40188 and 316, that added together give a palindrome (40504).

The spelling of 40188316 in words is "forty million, one hundred eighty-eight thousand, three hundred sixteen".