28953668888 has 8 divisors (see below), whose sum is σ = 54288129180. Its totient is φ = 14476834440.

The previous prime is 28953668869. The next prime is 28953668893. The reversal of 28953668888 is 88886635982.

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 polite number, since it can be written as a sum of consecutive naturals, namely, 1809604298 + ... + 1809604313.

Almost surely, 2^28953668888 is an apocalyptic number.

It is an amenable number.

28953668888 is a deficient number, since it is larger than the sum of its proper divisors (25334460292).

28953668888 is a wasteful number, since it uses less digits than its factorization.

28953668888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3619208617 (or 3619208613 counting only the distinct ones).

The product of its digits is 318504960, while the sum is 71.

The spelling of 28953668888 in words is "twenty-eight billion, nine hundred fifty-three million, six hundred sixty-eight thousand, eight hundred eighty-eight".