28894863544 has 16 divisors (see below), whose sum is σ = 54183827520. Its totient is φ = 14445842880.

The previous prime is 28894863533. The next prime is 28894863589. The reversal of 28894863544 is 44536849882.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 119469 + ... + 268444.

It is an arithmetic number, because the mean of its divisors is an integer number (3386489220).

Almost surely, 2^28894863544 is an apocalyptic number.

It is an amenable number.

28894863544 is a deficient number, since it is larger than the sum of its proper divisors (25288963976).

28894863544 is a wasteful number, since it uses less digits than its factorization.

28894863544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397230 (or 397226 counting only the distinct ones).

The product of its digits is 53084160, while the sum is 61.

The spelling of 28894863544 in words is "twenty-eight billion, eight hundred ninety-four million, eight hundred sixty-three thousand, five hundred forty-four".