1028135108 has 96 divisors (see below), whose sum is σ = 2425344768. Its totient is φ = 368294400.

The previous prime is 1028135099. The next prime is 1028135113. The reversal of 1028135108 is 8015318201.

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, 1845566 + ... + 1846122.

It is an arithmetic number, because the mean of its divisors is an integer number (25264008).

Almost surely, 2^1028135108 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 1028135108, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1212672384).

1028135108 is an abundant number, since it is smaller than the sum of its proper divisors (1397209660).

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

1028135108 is a wasteful number, since it uses less digits than its factorization.

1028135108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1053 (or 1051 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 29.

The square root of 1028135108 is about 32064.5459659107. The cubic root of 1028135108 is about 1009.2917650286.

The spelling of 1028135108 in words is "one billion, twenty-eight million, one hundred thirty-five thousand, one hundred eight".