40705287 has 16 divisors (see below), whose sum is σ = 62599680. Its totient is φ = 23045472.

The previous prime is 40705283. The next prime is 40705289. The reversal of 40705287 is 78250704.

40705287 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40705287 - 2² = 40705283 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40705283) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 6603 + ... + 11180.

It is an arithmetic number, because the mean of its divisors is an integer number (3912480).

Almost surely, 2^40705287 is an apocalyptic number.

40705287 is a deficient number, since it is larger than the sum of its proper divisors (21894393).

40705287 is a wasteful number, since it uses less digits than its factorization.

40705287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17902.

The product of its (nonzero) digits is 15680, while the sum is 33.

The square root of 40705287 is about 6380.0695137279. The cubic root of 40705287 is about 343.9935296016.

The spelling of 40705287 in words is "forty million, seven hundred five thousand, two hundred eighty-seven".