1028889722286 has 12 divisors (see below), whose sum is σ = 2229261064992. Its totient is φ = 342963240756.

The previous prime is 1028889722281. The next prime is 1028889722387. The reversal of 1028889722286 is 6822279888201.

1028889722286 is a `hidden beast` number, since 1 + 0 + 288 + 8 + 9 + 72 + 2 + 286 = 666.

It is a super-2 number, since 2×1028889722286² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1028889722281) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 28580270046 + ... + 28580270081.

It is an arithmetic number, because the mean of its divisors is an integer number (185771755416).

Almost surely, 2^{1028889722286} is an apocalyptic number.

1028889722286 is an abundant number, since it is smaller than the sum of its proper divisors (1200371342706).

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

1028889722286 is a wasteful number, since it uses less digits than its factorization.

1028889722286 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57160540135 (or 57160540132 counting only the distinct ones).

The product of its (nonzero) digits is 24772608, while the sum is 63.

The spelling of 1028889722286 in words is "one trillion, twenty-eight billion, eight hundred eighty-nine million, seven hundred twenty-two thousand, two hundred eighty-six".