1128330 has 80 divisors (see below), whose sum is σ = 3484800. Its totient is φ = 256608.

The previous prime is 1128313. The next prime is 1128349. The reversal of 1128330 is 338211.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a plaindrome in base 16.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 5571 + ... + 5769.

It is an arithmetic number, because the mean of its divisors is an integer number (43560).

2^1128330 is an apocalyptic number.

1128330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1128330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1742400).

1128330 is an abundant number, since it is smaller than the sum of its proper divisors (2356470).

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

1128330 is a wasteful number, since it uses less digits than its factorization.

1128330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225 (or 216 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1128330 is about 1062.2287889151. The cubic root of 1128330 is about 104.1067075381.

The spelling of 1128330 in words is "one million, one hundred twenty-eight thousand, three hundred thirty".