40287768 has 16 divisors (see below), whose sum is σ = 100719480. Its totient is φ = 13429248.

The previous prime is 40287713. The next prime is 40287781. The reversal of 40287768 is 86778204.

40287768 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 839305 + ... + 839352.

Almost surely, 2^40287768 is an apocalyptic number.

It is an amenable number.

40287768 is an abundant number, since it is smaller than the sum of its proper divisors (60431712).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40287768 is a wasteful number, since it uses less digits than its factorization.

40287768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1678666 (or 1678662 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 42.

The square root of 40287768 is about 6347.2646076873. The cubic root of 40287768 is about 342.8133577022.

The spelling of 40287768 in words is "forty million, two hundred eighty-seven thousand, seven hundred sixty-eight".