40028886 has 24 divisors (see below), whose sum is σ = 88367760. Its totient is φ = 13090896.

The previous prime is 40028867. The next prime is 40028899. The reversal of 40028886 is 68882004.

40028886 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 40028886.

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 11 ways as a sum of consecutive naturals, for example, 20026 + ... + 21933.

It is an arithmetic number, because the mean of its divisors is an integer number (3681990).

Almost surely, 2^40028886 is an apocalyptic number.

40028886 is an abundant number, since it is smaller than the sum of its proper divisors (48338874).

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

40028886 is a wasteful number, since it uses less digits than its factorization.

40028886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42020 (or 42017 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 36.

The square root of 40028886 is about 6326.8385470154. The cubic root of 40028886 is about 342.0774934685.

The spelling of 40028886 in words is "forty million, twenty-eight thousand, eight hundred eighty-six".