1100328320 has 192 divisors, whose sum is σ = 3296538000. Its totient is φ = 348106752.

The previous prime is 1100328293. The next prime is 1100328367. The reversal of 1100328320 is 238230011.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1100328292 and 1100328301.

It is a congruent number.

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, 406331 + ... + 409029.

Almost surely, 2^1100328320 is an apocalyptic number.

1100328320 is a gapful number since it is divisible by the number (10) 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 1100328320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1648269000).

1100328320 is an abundant number, since it is smaller than the sum of its proper divisors (2196209680).

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

1100328320 is a wasteful number, since it uses less digits than its factorization.

1100328320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2745 (or 2726 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 1100328320 is about 33171.1971445108. The cubic root of 1100328320 is about 1032.3828077272.

Adding to 1100328320 its reverse (238230011), we get a palindrome (1338558331).

The spelling of 1100328320 in words is "one billion, one hundred million, three hundred twenty-eight thousand, three hundred twenty".