28728849358 has 32 divisors (see below), whose sum is σ = 48029345280. Its totient is φ = 12775863360.

The previous prime is 28728849343. The next prime is 28728849367. The reversal of 28728849358 is 85394882782.

It is a self number, because there is not a number n which added to its sum of digits gives 28728849358.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5052385 + ... + 5058067.

It is an arithmetic number, because the mean of its divisors is an integer number (1500917040).

Almost surely, 2^28728849358 is an apocalyptic number.

28728849358 is a deficient number, since it is larger than the sum of its proper divisors (19300495922).

28728849358 is a wasteful number, since it uses less digits than its factorization.

28728849358 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10632.

The product of its digits is 61931520, while the sum is 64.

The spelling of 28728849358 in words is "twenty-eight billion, seven hundred twenty-eight million, eight hundred forty-nine thousand, three hundred fifty-eight".