28658769612 has 48 divisors (see below), whose sum is σ = 72961523712. Its totient is φ = 8683055680.

The previous prime is 28658769611. The next prime is 28658769637. The reversal of 28658769612 is 21696785682.

It is not an unprimeable number, because it can be changed into a prime (28658769611) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1022773 + ... + 1050419.

It is an arithmetic number, because the mean of its divisors is an integer number (1520031744).

Almost surely, 2^28658769612 is an apocalyptic number.

28658769612 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

28658769612 is an abundant number, since it is smaller than the sum of its proper divisors (44302754100).

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

28658769612 is a wasteful number, since it uses less digits than its factorization.

28658769612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35518 (or 35516 counting only the distinct ones).

The product of its digits is 17418240, while the sum is 60.

The spelling of 28658769612 in words is "twenty-eight billion, six hundred fifty-eight million, seven hundred sixty-nine thousand, six hundred twelve".