1028171100 has 72 divisors (see below), whose sum is σ = 3245292288. Its totient is φ = 249252800.

The previous prime is 1028171099. The next prime is 1028171113. The reversal of 1028171100 is 11718201.

1028171100 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 152484 + ... + 159083.

It is an arithmetic number, because the mean of its divisors is an integer number (45073504).

Almost surely, 2^1028171100 is an apocalyptic number.

1028171100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1028171100 is an abundant number, since it is smaller than the sum of its proper divisors (2217121188).

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

1028171100 is a wasteful number, since it uses less digits than its factorization.

1028171100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311595 (or 311588 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 21.

The square root of 1028171100 is about 32065.1072039374. The cubic root of 1028171100 is about 1009.3035423411.

Adding to 1028171100 its reverse (11718201), we get a palindrome (1039889301).

The spelling of 1028171100 in words is "one billion, twenty-eight million, one hundred seventy-one thousand, one hundred".