28693872798 has 8 divisors (see below), whose sum is σ = 57387745608. Its totient is φ = 9564624264.

The previous prime is 28693872787. The next prime is 28693872811. The reversal of 28693872798 is 89727839682.

It is a sphenic number, since it is the product of 3 distinct primes.

28693872798 is an admirable number.

It is a super-2 number, since 2×28693872798² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2391156061 + ... + 2391156072.

It is an arithmetic number, because the mean of its divisors is an integer number (7173468201).

Almost surely, 2^28693872798 is an apocalyptic number.

28693872798 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.

28693872798 is a wasteful number, since it uses less digits than its factorization.

28693872798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4782312138.

The product of its digits is 146313216, while the sum is 69.

The spelling of 28693872798 in words is "twenty-eight billion, six hundred ninety-three million, eight hundred seventy-two thousand, seven hundred ninety-eight".