28973053287808 has 192 divisors, whose sum is σ = 72826985634480. Its totient is φ = 11401568747520.

The previous prime is 28973053287751. The next prime is 28973053287811. The reversal of 28973053287808 is 80878235037982.

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 23 ways as a sum of consecutive naturals, for example, 1057791 + ... + 7685377.

Almost surely, 2^{28973053287808} is an apocalyptic number.

28973053287808 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28973053287808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36413492817240).

28973053287808 is an abundant number, since it is smaller than the sum of its proper divisors (43853932346672).

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

28973053287808 is a wasteful number, since it uses less digits than its factorization.

28973053287808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6627673 (or 6627654 counting only the distinct ones).

The product of its (nonzero) digits is 325140480, while the sum is 70.

The spelling of 28973053287808 in words is "twenty-eight trillion, nine hundred seventy-three billion, fifty-three million, two hundred eighty-seven thousand, eight hundred eight".