40816064 has 14 divisors (see below), whose sum is σ = 80994504. Its totient is φ = 20408000.

The previous prime is 40816049. The next prime is 40816091. The reversal of 40816064 is 46061804.

40816064 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 an unprimeable number.

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 as a sum of consecutive naturals, namely, 318812 + ... + 318939.

Almost surely, 2^40816064 is an apocalyptic number.

It is an amenable number.

40816064 is a deficient number, since it is larger than the sum of its proper divisors (40178440).

40816064 is an equidigital number, since it uses as much as digits as its factorization.

40816064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 637763 (or 637753 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 40816064 is about 6388.7451036960. The cubic root of 40816064 is about 344.3052995456.

Adding to 40816064 its reverse (46061804), we get a palindrome (86877868).

The spelling of 40816064 in words is "forty million, eight hundred sixteen thousand, sixty-four".