28052781870 has 32 divisors (see below), whose sum is σ = 68430396960. Its totient is φ = 7358106240.

The previous prime is 28052781803. The next prime is 28052781893. The reversal of 28052781870 is 7818725082.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 7662865 + ... + 7666524.

It is an arithmetic number, because the mean of its divisors is an integer number (2138449905).

Almost surely, 2^28052781870 is an apocalyptic number.

28052781870 is an abundant number, since it is smaller than the sum of its proper divisors (40377615090).

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

28052781870 is a wasteful number, since it uses less digits than its factorization.

28052781870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15329460.

The product of its (nonzero) digits is 501760, while the sum is 48.

The spelling of 28052781870 in words is "twenty-eight billion, fifty-two million, seven hundred eighty-one thousand, eight hundred seventy".