40312244 has 24 divisors (see below), whose sum is σ = 80989440. Its totient is φ = 17198496.

The previous prime is 40312241. The next prime is 40312271. The reversal of 40312244 is 44221304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40312241) 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, 3269 + ... + 9555.

It is an arithmetic number, because the mean of its divisors is an integer number (3374560).

Almost surely, 2^40312244 is an apocalyptic number.

It is an amenable number.

40312244 is an abundant number, since it is smaller than the sum of its proper divisors (40677196).

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

40312244 is a wasteful number, since it uses less digits than its factorization.

40312244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6527 (or 6525 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 40312244 is about 6349.1923895878. The cubic root of 40312244 is about 342.8827667026.

Adding to 40312244 its reverse (44221304), we get a palindrome (84533548).

The spelling of 40312244 in words is "forty million, three hundred twelve thousand, two hundred forty-four".