1128117732 has 96 divisors (see below), whose sum is σ = 3053611008. Its totient is φ = 317508864.

The previous prime is 1128117707. The next prime is 1128117737. The reversal of 1128117732 is 2377118211.

It is a junction number, because it is equal to n+sod(n) for n = 1128117693 and 1128117702.

It is not an unprimeable number, because it can be changed into a prime (1128117737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1921543 + ... + 1922129.

It is an arithmetic number, because the mean of its divisors is an integer number (31808448).

Almost surely, 2^1128117732 is an apocalyptic number.

1128117732 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 1128117732, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1526805504).

1128117732 is an abundant number, since it is smaller than the sum of its proper divisors (1925493276).

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

1128117732 is a wasteful number, since it uses less digits than its factorization.

1128117732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 905 (or 903 counting only the distinct ones).

The product of its digits is 4704, while the sum is 33.

The square root of 1128117732 is about 33587.4639114060. The cubic root of 1128117732 is about 1041.0017874233.

The spelling of 1128117732 in words is "one billion, one hundred twenty-eight million, one hundred seventeen thousand, seven hundred thirty-two".