40304666 has 4 divisors (see below), whose sum is σ = 60457002. Its totient is φ = 20152332.

The previous prime is 40304659. The next prime is 40304669. The reversal of 40304666 is 66640304.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 22420225 + 17884441 = 4735^2 + 4229^2 .

It is a super-2 number, since 2×40304666² = 3248932202743112, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40304669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10076165 + ... + 10076168.

Almost surely, 2^40304666 is an apocalyptic number.

40304666 is a deficient number, since it is larger than the sum of its proper divisors (20152336).

40304666 is a wasteful number, since it uses less digits than its factorization.

40304666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20152335.

The product of its (nonzero) digits is 10368, while the sum is 29.

The square root of 40304666 is about 6348.5955927276. The cubic root of 40304666 is about 342.8612800261.

The spelling of 40304666 in words is "forty million, three hundred four thousand, six hundred sixty-six".