1028855522 has 18 divisors (see below), whose sum is σ = 1588712643. Its totient is φ = 499707792.

The previous prime is 1028855501. The next prime is 1028855543. The reversal of 1028855522 is 2255588201.

It is an interprime number because it is at equal distance from previous prime (1028855501) and next prime (1028855543).

It can be written as a sum of positive squares in 5 ways, for example, as 247149841 + 781705681 = 15721^2 + 27959^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=22681.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1678088 + ... + 1678700.

Almost surely, 2^1028855522 is an apocalyptic number.

1028855522 is a deficient number, since it is larger than the sum of its proper divisors (559857121).

1028855522 is an frugal number, since it uses more digits than its factorization.

1028855522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1302 (or 652 counting only the distinct ones).

The product of its (nonzero) digits is 64000, while the sum is 38.

The square root of 1028855522 is about 32075.7778081842. Note that the first 3 decimals coincide. The cubic root of 1028855522 is about 1009.5274468146.

The spelling of 1028855522 in words is "one billion, twenty-eight million, eight hundred fifty-five thousand, five hundred twenty-two".