40037768 has 8 divisors (see below), whose sum is σ = 75070830. Its totient is φ = 20018880.

The previous prime is 40037761. The next prime is 40037791. The reversal of 40037768 is 86773004.

It can be written as a sum of positive squares in only one way, i.e., 31382404 + 8655364 = 5602^2 + 2942^2 .

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

It is not an unprimeable number, because it can be changed into a prime (40037761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2502353 + ... + 2502368.

Almost surely, 2^40037768 is an apocalyptic number.

It is an amenable number.

40037768 is a deficient number, since it is larger than the sum of its proper divisors (35033062).

40037768 is a wasteful number, since it uses less digits than its factorization.

40037768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5004727 (or 5004723 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 40037768 is about 6327.5404384326. The cubic root of 40037768 is about 342.1027927620.

The spelling of 40037768 in words is "forty million, thirty-seven thousand, seven hundred sixty-eight".