40296388 has 18 divisors (see below), whose sum is σ = 77513198. Its totient is φ = 18316320.

The previous prime is 40296383. The next prime is 40296401. The reversal of 40296388 is 88369204.

It can be written as a sum of positive squares in only one way, i.e., 39037504 + 1258884 = 6248^2 + 1122^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 40296388.

It is not an unprimeable number, because it can be changed into a prime (40296383) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 41145 + ... + 42112.

Almost surely, 2^40296388 is an apocalyptic number.

It is an amenable number.

40296388 is a deficient number, since it is larger than the sum of its proper divisors (37216810).

40296388 is a wasteful number, since it uses less digits than its factorization.

40296388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83283 (or 83270 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 40.

The square root of 40296388 is about 6347.9436040343. The cubic root of 40296388 is about 342.8378054901.

The spelling of 40296388 in words is "forty million, two hundred ninety-six thousand, three hundred eighty-eight".