40904072 has 16 divisors (see below), whose sum is σ = 83667600. Its totient is φ = 18592720.

The previous prime is 40904041. The next prime is 40904089. The reversal of 40904072 is 27040904.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 232322 + ... + 232497.

It is an arithmetic number, because the mean of its divisors is an integer number (5229225).

Almost surely, 2^40904072 is an apocalyptic number.

It is an amenable number.

40904072 is an abundant number, since it is smaller than the sum of its proper divisors (42763528).

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

40904072 is a wasteful number, since it uses less digits than its factorization.

40904072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 464836 (or 464832 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 40904072 is about 6395.6291324623. The cubic root of 40904072 is about 344.5525867246.

Adding to 40904072 its reverse (27040904), we get a palindrome (67944976).

The spelling of 40904072 in words is "forty million, nine hundred four thousand, seventy-two".