28087046040 has 32 divisors (see below), whose sum is σ = 84261138480. Its totient is φ = 7489878912.

The previous prime is 28087045901. The next prime is 28087046047. The reversal of 28087046040 is 4064078082.

It is a self number, because there is not a number n which added to its sum of digits gives 28087046040.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28087046047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117029239 + ... + 117029478.

Almost surely, 2^28087046040 is an apocalyptic number.

28087046040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28087046040 is an abundant number, since it is smaller than the sum of its proper divisors (56174092440).

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

28087046040 is a wasteful number, since it uses less digits than its factorization.

28087046040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234058731 (or 234058727 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 39.

The spelling of 28087046040 in words is "twenty-eight billion, eighty-seven million, forty-six thousand, forty".