40615312 has 80 divisors (see below), whose sum is σ = 91065600. Its totient is φ = 17418240.

The previous prime is 40615291. The next prime is 40615319. The reversal of 40615312 is 21351604.

It is not an unprimeable number, because it can be changed into a prime (40615319) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 149737 + ... + 150007.

It is an arithmetic number, because the mean of its divisors is an integer number (1138320).

Almost surely, 2^40615312 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 40615312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45532800).

40615312 is an abundant number, since it is smaller than the sum of its proper divisors (50450288).

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

40615312 is a wasteful number, since it uses less digits than its factorization.

40615312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344 (or 338 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 40615312 is about 6373.0143574293. The cubic root of 40615312 is about 343.7398880992.

Adding to 40615312 its reverse (21351604), we get a palindrome (61966916).

The spelling of 40615312 in words is "forty million, six hundred fifteen thousand, three hundred twelve".