28697766300728 has 64 divisors (see below), whose sum is σ = 61553368800000. Its totient is φ = 12287416280832.

The previous prime is 28697766300683. The next prime is 28697766300767. The reversal of 28697766300728 is 82700366779682.

It is a congruent number.

It is an unprimeable number.

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, 313820900 + ... + 313912332.

It is an arithmetic number, because the mean of its divisors is an integer number (961771387500).

Almost surely, 2^{28697766300728} is an apocalyptic number.

28697766300728 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

28697766300728 is an abundant number, since it is smaller than the sum of its proper divisors (32855602499272).

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

28697766300728 is a wasteful number, since it uses less digits than its factorization.

28697766300728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96684 (or 96680 counting only the distinct ones).

The product of its (nonzero) digits is 512096256, while the sum is 71.

The spelling of 28697766300728 in words is "twenty-eight trillion, six hundred ninety-seven billion, seven hundred sixty-six million, three hundred thousand, seven hundred twenty-eight".