28914434648 has 16 divisors (see below), whose sum is σ = 59143161960. Its totient is φ = 13142924800.

The previous prime is 28914434629. The next prime is 28914434651. The reversal of 28914434648 is 84643441982.

It is a self number, because there is not a number n which added to its sum of digits gives 28914434648.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 164286473 + ... + 164286648.

Almost surely, 2^28914434648 is an apocalyptic number.

It is an amenable number.

28914434648 is an abundant number, since it is smaller than the sum of its proper divisors (30228727312).

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

28914434648 is a wasteful number, since it uses less digits than its factorization.

28914434648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328573138 (or 328573134 counting only the distinct ones).

The product of its digits is 5308416, while the sum is 53.

The spelling of 28914434648 in words is "twenty-eight billion, nine hundred fourteen million, four hundred thirty-four thousand, six hundred forty-eight".