28646906688000 has 1280 divisors, whose sum is σ = 107874338457600. Its totient is φ = 7492696473600.

The previous prime is 28646906687981. The next prime is 28646906688007. The reversal of 28646906688000 is 88660964682.

It is a tau number, because it is divible by the number of its divisors (1280).

It is not an unprimeable number, because it can be changed into a prime (28646906688007) by changing a digit.

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 127 ways as a sum of consecutive naturals, for example, 23616575394 + ... + 23616576606.

It is an arithmetic number, because the mean of its divisors is an integer number (84276826920).

Almost surely, 2^{28646906688000} is an apocalyptic number.

28646906688000 is a gapful number since it is divisible by the number (20) 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 28646906688000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53937169228800).

28646906688000 is an abundant number, since it is smaller than the sum of its proper divisors (79227431769600).

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

28646906688000 is a wasteful number, since it uses less digits than its factorization.

28646906688000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1507 (or 1475 counting only the distinct ones).

The product of its (nonzero) digits is 47775744, while the sum is 63.

The spelling of 28646906688000 in words is "twenty-eight trillion, six hundred forty-six billion, nine hundred six million, six hundred eighty-eight thousand".