40340368 has 10 divisors (see below), whose sum is σ = 78159494. Its totient is φ = 20170176.

The previous prime is 40340359. The next prime is 40340369. The reversal of 40340368 is 86304304.

It can be written as a sum of positive squares in only one way, i.e., 40297104 + 43264 = 6348^2 + 208^2 .

It is not an unprimeable number, because it can be changed into a prime (40340369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1260621 + ... + 1260652.

Almost surely, 2^40340368 is an apocalyptic number.

It is an amenable number.

40340368 is a deficient number, since it is larger than the sum of its proper divisors (37819126).

40340368 is a wasteful number, since it uses less digits than its factorization.

40340368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2521281 (or 2521275 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 40340368 is about 6351.4067733062. The cubic root of 40340368 is about 342.9624860162.

The spelling of 40340368 in words is "forty million, three hundred forty thousand, three hundred sixty-eight".