28871444287146 has 64 divisors (see below), whose sum is σ = 59416745119488. Its totient is φ = 9345846002688.

The previous prime is 28871444287073. The next prime is 28871444287157. The reversal of 28871444287146 is 64178244417882.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 304738435 + ... + 304833161.

It is an arithmetic number, because the mean of its divisors is an integer number (928386642492).

Almost surely, 2^{28871444287146} is an apocalyptic number.

28871444287146 is an abundant number, since it is smaller than the sum of its proper divisors (30545300832342).

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

28871444287146 is a wasteful number, since it uses less digits than its factorization.

28871444287146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97375.

The product of its digits is 154140672, while the sum is 66.

The spelling of 28871444287146 in words is "twenty-eight trillion, eight hundred seventy-one billion, four hundred forty-four million, two hundred eighty-seven thousand, one hundred forty-six".