1128744936 has 128 divisors (see below), whose sum is σ = 3469132800. Its totient is φ = 337176000.

The previous prime is 1128744889. The next prime is 1128744961. The reversal of 1128744936 is 6394478211.

It is a junction number, because it is equal to n+sod(n) for n = 1128744891 and 1128744900.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 165351 + ... + 172041.

It is an arithmetic number, because the mean of its divisors is an integer number (27102600).

Almost surely, 2^1128744936 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 1128744936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1734566400).

1128744936 is an abundant number, since it is smaller than the sum of its proper divisors (2340387864).

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

1128744936 is a wasteful number, since it uses less digits than its factorization.

1128744936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6788 (or 6778 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 1128744936 is about 33596.7994904277. The cubic root of 1128744936 is about 1041.1946749508.

The spelling of 1128744936 in words is "one billion, one hundred twenty-eight million, seven hundred forty-four thousand, nine hundred thirty-six".