28397022860688 has 160 divisors (see below), whose sum is σ = 77883535134720. Its totient is φ = 8897463843840.

The previous prime is 28397022860677. The next prime is 28397022860743. The reversal of 28397022860688 is 88606822079382.

It is a Smith number, since the sum of its digits (69) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (69).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15129193 + ... + 16902263.

It is an arithmetic number, because the mean of its divisors is an integer number (486772094592).

Almost surely, 2^{28397022860688} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28397022860688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38941767567360).

28397022860688 is an abundant number, since it is smaller than the sum of its proper divisors (49486512274032).

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

28397022860688 is a wasteful number, since it uses less digits than its factorization.

28397022860688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1773357 (or 1773351 counting only the distinct ones).

The product of its (nonzero) digits is 222953472, while the sum is 69.

The spelling of 28397022860688 in words is "twenty-eight trillion, three hundred ninety-seven billion, twenty-two million, eight hundred sixty thousand, six hundred eighty-eight".