1128339612 has 96 divisors (see below), whose sum is σ = 3151196160. Its totient is φ = 348131520.

The previous prime is 1128339539. The next prime is 1128339613. The reversal of 1128339612 is 2169338211.

1128339612 is a `hidden beast` number, since 1 + 1 + 2 + 8 + 3 + 39 + 612 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1128339613) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 69678 + ... + 84330.

It is an arithmetic number, because the mean of its divisors is an integer number (32824960).

Almost surely, 2^1128339612 is an apocalyptic number.

1128339612 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1128339612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1575598080).

1128339612 is an abundant number, since it is smaller than the sum of its proper divisors (2022856548).

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

1128339612 is a wasteful number, since it uses less digits than its factorization.

1128339612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14720 (or 14712 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 1128339612 is about 33590.7667670745. The cubic root of 1128339612 is about 1041.0700315816.

The spelling of 1128339612 in words is "one billion, one hundred twenty-eight million, three hundred thirty-nine thousand, six hundred twelve".