40804281 has 12 divisors (see below), whose sum is σ = 67359552. Its totient is φ = 23316696.

The previous prime is 40804271. The next prime is 40804321. The reversal of 40804281 is 18240804.

It is not a de Polignac number, because 40804281 - 2⁵ = 40804249 is a prime.

It is a super-2 number, since 2×40804281² = 3329978695853922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40804201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 323781 + ... + 323906.

It is an arithmetic number, because the mean of its divisors is an integer number (5613296).

Almost surely, 2^40804281 is an apocalyptic number.

It is an amenable number.

40804281 is a deficient number, since it is larger than the sum of its proper divisors (26555271).

40804281 is a wasteful number, since it uses less digits than its factorization.

40804281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 647700 (or 647697 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 27.

The square root of 40804281 is about 6387.8228685523. The cubic root of 40804281 is about 344.2721643908.

The spelling of 40804281 in words is "forty million, eight hundred four thousand, two hundred eighty-one".