40307008 has 42 divisors (see below), whose sum is σ = 93050106. Its totient is φ = 17273088.

The previous prime is 40306993. The next prime is 40307011. The reversal of 40307008 is 80070304.

It can be written as a sum of positive squares in only one way, i.e., 30118144 + 10188864 = 5488^2 + 3192^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 40307008.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3291 + ... + 9562.

Almost surely, 2^40307008 is an apocalyptic number.

It is an amenable number.

40307008 is an abundant number, since it is smaller than the sum of its proper divisors (52743098).

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

40307008 is a wasteful number, since it uses less digits than its factorization.

40307008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12879 (or 12862 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 40307008 is about 6348.7800402912. The cubic root of 40307008 is about 342.8679208252.

The spelling of 40307008 in words is "forty million, three hundred seven thousand, eight".