40007306 has 8 divisors (see below), whose sum is σ = 60037860. Its totient is φ = 19994688.

The previous prime is 40007263. The next prime is 40007309. The reversal of 40007306 is 60370004.

It can be written as a sum of positive squares in 2 ways, for example, as 40005625 + 1681 = 6325^2 + 41^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (40007309) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5960 + ... + 10748.

Almost surely, 2^40007306 is an apocalyptic number.

40007306 is a deficient number, since it is larger than the sum of its proper divisors (20030554).

40007306 is a wasteful number, since it uses less digits than its factorization.

40007306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8968.

The product of its (nonzero) digits is 504, while the sum is 20.

The square root of 40007306 is about 6325.1328839796. The cubic root of 40007306 is about 342.0160098749.

The spelling of 40007306 in words is "forty million, seven thousand, three hundred six".