28149600028 has 24 divisors (see below), whose sum is σ = 54542242944. Its totient is φ = 12604297200.

The previous prime is 28149599987. The next prime is 28149600041. The reversal of 28149600028 is 82000694182.

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 7 ways as a sum of consecutive naturals, for example, 4771408 + ... + 4777303.

It is an arithmetic number, because the mean of its divisors is an integer number (2272593456).

Almost surely, 2^28149600028 is an apocalyptic number.

It is an amenable number.

28149600028 is a deficient number, since it is larger than the sum of its proper divisors (26392642916).

28149600028 is a wasteful number, since it uses less digits than its factorization.

28149600028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9548793 (or 9548791 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 40.

The spelling of 28149600028 in words is "twenty-eight billion, one hundred forty-nine million, six hundred thousand, twenty-eight".