28653574784 has 32 divisors (see below), whose sum is σ = 58924698240. Its totient is φ = 13864631040.

The previous prime is 28653574771. The next prime is 28653574801. The reversal of 28653574784 is 48747535682.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3606614 + ... + 3614549.

It is an arithmetic number, because the mean of its divisors is an integer number (1841396820).

Almost surely, 2^28653574784 is an apocalyptic number.

It is an amenable number.

28653574784 is an abundant number, since it is smaller than the sum of its proper divisors (30271123456).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28653574784 is an equidigital number, since it uses as much as digits as its factorization.

28653574784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7221208 (or 7221196 counting only the distinct ones).

The product of its digits is 45158400, while the sum is 59.

The spelling of 28653574784 in words is "twenty-eight billion, six hundred fifty-three million, five hundred seventy-four thousand, seven hundred eighty-four".