1128442116 has 72 divisors (see below), whose sum is σ = 2824095456. Its totient is φ = 350597120.

The previous prime is 1128442097. The next prime is 1128442127. The reversal of 1128442116 is 6112448211.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 369556 + ... + 372596.

It is an arithmetic number, because the mean of its divisors is an integer number (39223548).

Almost surely, 2^1128442116 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 1128442116, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1412047728).

1128442116 is an abundant number, since it is smaller than the sum of its proper divisors (1695653340).

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

1128442116 is a wasteful number, since it uses less digits than its factorization.

1128442116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3189 (or 3170 counting only the distinct ones).

The product of its digits is 3072, while the sum is 30.

The square root of 1128442116 is about 33592.2925088479. The cubic root of 1128442116 is about 1041.1015559590.

It can be divided in two parts, 112844 and 2116, that added together give a triangular number (114960 = T₄₇₉).

The spelling of 1128442116 in words is "one billion, one hundred twenty-eight million, four hundred forty-two thousand, one hundred sixteen".