40028885 has 8 divisors (see below), whose sum is σ = 51729720. Its totient is φ = 29559744.

The previous prime is 40028867. The next prime is 40028899. The reversal of 40028885 is 58882004.

40028885 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 5466244 + 34562641 = 2338^2 + 5879^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 40028885 - 2⁸ = 40028629 is a prime.

It is a Curzon number.

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 7 ways as a sum of consecutive naturals, for example, 307850 + ... + 307979.

It is an arithmetic number, because the mean of its divisors is an integer number (6466215).

Almost surely, 2^40028885 is an apocalyptic number.

It is an amenable number.

40028885 is a deficient number, since it is larger than the sum of its proper divisors (11700835).

40028885 is a wasteful number, since it uses less digits than its factorization.

40028885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 615847.

The product of its (nonzero) digits is 20480, while the sum is 35.

The square root of 40028885 is about 6326.8384679870. The cubic root of 40028885 is about 342.0774906199.

The spelling of 40028885 in words is "forty million, twenty-eight thousand, eight hundred eighty-five".