40668296 has 8 divisors (see below), whose sum is σ = 76253070. Its totient is φ = 20334144.

The previous prime is 40668289. The next prime is 40668307. The reversal of 40668296 is 69286604.

It can be written as a sum of positive squares in only one way, i.e., 29311396 + 11356900 = 5414^2 + 3370^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2541761 + ... + 2541776.

Almost surely, 2^40668296 is an apocalyptic number.

It is an amenable number.

40668296 is a deficient number, since it is larger than the sum of its proper divisors (35584774).

40668296 is a wasteful number, since it uses less digits than its factorization.

40668296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5083543 (or 5083539 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 41.

The square root of 40668296 is about 6377.1699052166. The cubic root of 40668296 is about 343.8892964494.

The spelling of 40668296 in words is "forty million, six hundred sixty-eight thousand, two hundred ninety-six".