40643104 has 12 divisors (see below), whose sum is σ = 80016174. Its totient is φ = 20321536.

The previous prime is 40643087. The next prime is 40643111. The reversal of 40643104 is 40134604.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 24482704 + 16160400 = 4948^2 + 4020^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 635017 + ... + 635080.

Almost surely, 2^40643104 is an apocalyptic number.

It is an amenable number.

40643104 is a deficient number, since it is larger than the sum of its proper divisors (39373070).

40643104 is a wasteful number, since it uses less digits than its factorization.

40643104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1270107 (or 1270099 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 40643104 is about 6375.1944284077. The cubic root of 40643104 is about 343.8182743065.

Adding to 40643104 its reverse (40134604), we get a palindrome (80777708).

The spelling of 40643104 in words is "forty million, six hundred forty-three thousand, one hundred four".