40288705 has 8 divisors (see below), whose sum is σ = 48380904. Its totient is φ = 32208000.

The previous prime is 40288673. The next prime is 40288723. The reversal of 40288705 is 50788204.

It can be written as a sum of positive squares in 4 ways, for example, as 194481 + 40094224 = 441^2 + 6332^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40288705 - 2⁵ = 40288673 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10555 + ... + 13855.

It is an arithmetic number, because the mean of its divisors is an integer number (6047613).

Almost surely, 2^40288705 is an apocalyptic number.

It is an amenable number.

40288705 is a deficient number, since it is larger than the sum of its proper divisors (8092199).

40288705 is a wasteful number, since it uses less digits than its factorization.

40288705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5747.

The product of its (nonzero) digits is 17920, while the sum is 34.

The square root of 40288705 is about 6347.3384185814. The cubic root of 40288705 is about 342.8160153627.

The spelling of 40288705 in words is "forty million, two hundred eighty-eight thousand, seven hundred five".