28740563888 has 20 divisors (see below), whose sum is σ = 55689337440. Its totient is φ = 14369121984.

The previous prime is 28740563861. The next prime is 28740563893. The reversal of 28740563888 is 88836504782.

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, 153206 + ... + 284522.

It is an arithmetic number, because the mean of its divisors is an integer number (2784466872).

Almost surely, 2^28740563888 is an apocalyptic number.

It is an amenable number.

28740563888 is a deficient number, since it is larger than the sum of its proper divisors (26948773552).

28740563888 is a wasteful number, since it uses less digits than its factorization.

28740563888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145004 (or 144998 counting only the distinct ones).

The product of its (nonzero) digits is 20643840, while the sum is 59.

The spelling of 28740563888 in words is "twenty-eight billion, seven hundred forty million, five hundred sixty-three thousand, eight hundred eighty-eight".