1128328704 has 140 divisors (see below), whose sum is σ = 3381252336. Its totient is φ = 375985152.

The previous prime is 1128328703. The next prime is 1128328711. The reversal of 1128328704 is 4078238211.

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 (1128328703) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 371737 + ... + 374759.

Almost surely, 2^1128328704 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 1128328704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1690626168).

1128328704 is an abundant number, since it is smaller than the sum of its proper divisors (2252923632).

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

1128328704 is an frugal number, since it uses more digits than its factorization.

1128328704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3059 (or 3028 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 1128328704 is about 33590.6044006356. The cubic root of 1128328704 is about 1041.0666767913.

The spelling of 1128328704 in words is "one billion, one hundred twenty-eight million, three hundred twenty-eight thousand, seven hundred four".