1128489312 has 24 divisors (see below), whose sum is σ = 2962284696. Its totient is φ = 376163072.

The previous prime is 1128489293. The next prime is 1128489347. The reversal of 1128489312 is 2139848211.

It is a tau number, because it is divible by the number of its divisors (24).

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 3 ways as a sum of consecutive naturals, for example, 5877453 + ... + 5877644.

It is an arithmetic number, because the mean of its divisors is an integer number (123428529).

Almost surely, 2^1128489312 is an apocalyptic number.

1128489312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1128489312 is an abundant number, since it is smaller than the sum of its proper divisors (1833795384).

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

1128489312 is a wasteful number, since it uses less digits than its factorization.

1128489312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11755110 (or 11755102 counting only the distinct ones).

The product of its digits is 27648, while the sum is 39.

The square root of 1128489312 is about 33592.9949840737. The cubic root of 1128489312 is about 1041.1160701118.

The spelling of 1128489312 in words is "one billion, one hundred twenty-eight million, four hundred eighty-nine thousand, three hundred twelve".