28614187648 has 32 divisors (see below), whose sum is σ = 57012454260. Its totient is φ = 14305179648.

The previous prime is 28614187607. The next prime is 28614187673. The reversal of 28614187648 is 84678141682.

It can be written as a sum of positive squares in 2 ways, for example, as 19152345664 + 9461841984 = 138392^2 + 97272^2 .

It is a tau number, because it is divible by the number of its divisors (32).

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, 1865386 + ... + 1880662.

Almost surely, 2^28614187648 is an apocalyptic number.

It is an amenable number.

28614187648 is a deficient number, since it is larger than the sum of its proper divisors (28398266612).

28614187648 is a wasteful number, since it uses less digits than its factorization.

28614187648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29924 (or 29912 counting only the distinct ones).

The product of its digits is 4128768, while the sum is 55.

The spelling of 28614187648 in words is "twenty-eight billion, six hundred fourteen million, one hundred eighty-seven thousand, six hundred forty-eight".