74406440 has 32 divisors (see below), whose sum is σ = 168104160. Its totient is φ = 29640000.

The previous prime is 74406427. The next prime is 74406443. The reversal of 74406440 is 4460447.

It is not an unprimeable number, because it can be changed into a prime (74406443) 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 7 ways as a sum of consecutive naturals, for example, 6335 + ... + 13745.

It is an arithmetic number, because the mean of its divisors is an integer number (5253255).

Almost surely, 2^74406440 is an apocalyptic number.

It is an amenable number.

74406440 is an abundant number, since it is smaller than the sum of its proper divisors (93697720).

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

74406440 is a wasteful number, since it uses less digits than its factorization.

74406440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7673 (or 7669 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 29.

The square root of 74406440 is about 8625.9167628722. The cubic root of 74406440 is about 420.6008784088.

Adding to 74406440 its reverse (4460447), we get a palindrome (78866887).

The spelling of 74406440 in words is "seventy-four million, four hundred six thousand, four hundred forty".