28761964028 has 12 divisors (see below), whose sum is σ = 57523928112. Its totient is φ = 12326556000.

The previous prime is 28761964019. The next prime is 28761964061. The reversal of 28761964028 is 82046916782.

28761964028 is an admirable number.

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, 513606473 + ... + 513606528.

It is an arithmetic number, because the mean of its divisors is an integer number (4793660676).

Almost surely, 2^28761964028 is an apocalyptic number.

28761964028 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

28761964028 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

28761964028 is a wasteful number, since it uses less digits than its factorization.

28761964028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1027213012 (or 1027213010 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 53.

The spelling of 28761964028 in words is "twenty-eight billion, seven hundred sixty-one million, nine hundred sixty-four thousand, twenty-eight".