28696865012 has 12 divisors (see below), whose sum is σ = 51288014400. Its totient is φ = 14043146616.

The previous prime is 28696864981. The next prime is 28696865027. The reversal of 28696865012 is 21056869682.

It is a congruent number.

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, 76321262 + ... + 76321637.

It is an arithmetic number, because the mean of its divisors is an integer number (4274001200).

Almost surely, 2^28696865012 is an apocalyptic number.

It is an amenable number.

28696865012 is a deficient number, since it is larger than the sum of its proper divisors (22591149388).

28696865012 is a wasteful number, since it uses less digits than its factorization.

28696865012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152642950 (or 152642948 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 53.

The spelling of 28696865012 in words is "twenty-eight billion, six hundred ninety-six million, eight hundred sixty-five thousand, twelve".