1128128512 has 112 divisors (see below), whose sum is σ = 2617085952. Its totient is φ = 476282880.

The previous prime is 1128128501. The next prime is 1128128539. The reversal of 1128128512 is 2158218211.

It is a tau number, because it is divible by the number of its divisors (112).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5906337 + ... + 5906527.

Almost surely, 2^1128128512 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 1128128512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1308542976).

1128128512 is an abundant number, since it is smaller than the sum of its proper divisors (1488957440).

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

1128128512 is an equidigital number, since it uses as much as digits as its factorization.

1128128512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327 (or 303 counting only the distinct ones).

The product of its digits is 2560, while the sum is 31.

The square root of 1128128512 is about 33587.6243875628. The cubic root of 1128128512 is about 1041.0051032603.

It can be divided in two parts, 11281 and 28512, that added together give a palindrome (39793).

The spelling of 1128128512 in words is "one billion, one hundred twenty-eight million, one hundred twenty-eight thousand, five hundred twelve".