40365318 has 48 divisors (see below), whose sum is σ = 94457664. Its totient is φ = 11466000.

The previous prime is 40365313. The next prime is 40365341. The reversal of 40365318 is 81356304.

It is a super-2 number, since 2×40365318² = 3258717794482248, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40365313) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 73521 + ... + 74067.

It is an arithmetic number, because the mean of its divisors is an integer number (1967868).

Almost surely, 2^40365318 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40365318, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47228832).

40365318 is an abundant number, since it is smaller than the sum of its proper divisors (54092346).

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

40365318 is a wasteful number, since it uses less digits than its factorization.

40365318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 817 (or 810 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 40365318 is about 6353.3706014996. The cubic root of 40365318 is about 343.0331774099.

The spelling of 40365318 in words is "forty million, three hundred sixty-five thousand, three hundred eighteen".