28450402648 has 8 divisors (see below), whose sum is σ = 53344504980. Its totient is φ = 14225201320.

The previous prime is 28450402627. The next prime is 28450402679. The reversal of 28450402648 is 84620405482.

It is a tau number, because it is divible by the number of its divisors (8).

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 as a sum of consecutive naturals, namely, 1778150158 + ... + 1778150173.

Almost surely, 2^28450402648 is an apocalyptic number.

It is an amenable number.

28450402648 is a deficient number, since it is larger than the sum of its proper divisors (24894102332).

28450402648 is a wasteful number, since it uses less digits than its factorization.

28450402648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3556300337 (or 3556300333 counting only the distinct ones).

The product of its (nonzero) digits is 491520, while the sum is 43.

The spelling of 28450402648 in words is "twenty-eight billion, four hundred fifty million, four hundred two thousand, six hundred forty-eight".