28712535612 has 48 divisors (see below), whose sum is σ = 69635701632. Its totient is φ = 9199967040.

The previous prime is 28712535601. The next prime is 28712535619. The reversal of 28712535612 is 21653521782.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28712535619) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 352714 + ... + 426417.

It is an arithmetic number, because the mean of its divisors is an integer number (1450743784).

Almost surely, 2^28712535612 is an apocalyptic number.

It is an amenable number.

28712535612 is an abundant number, since it is smaller than the sum of its proper divisors (40923166020).

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

28712535612 is a wasteful number, since it uses less digits than its factorization.

28712535612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 779258 (or 779256 counting only the distinct ones).

The product of its digits is 201600, while the sum is 42.

The spelling of 28712535612 in words is "twenty-eight billion, seven hundred twelve million, five hundred thirty-five thousand, six hundred twelve".