1099328 has 28 divisors (see below), whose sum is σ = 2217420. Its totient is φ = 540672.

The previous prime is 1099327. The next prime is 1099337. The reversal of 1099328 is 8239901.

It can be written as a sum of positive squares in 2 ways, for example, as 238144 + 861184 = 488^2 + 928^2 .

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 1099294 and 1099303.

It is not an unprimeable number, because it can be changed into a prime (1099327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5600 + ... + 5792.

2^1099328 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 1099328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1108710).

1099328 is an abundant number, since it is smaller than the sum of its proper divisors (1118092).

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

1099328 is an equidigital number, since it uses as much as digits as its factorization.

1099328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294 (or 284 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 1099328 is about 1048.4884357970. The cubic root of 1099328 is about 103.2069862867.

The spelling of 1099328 in words is "one million, ninety-nine thousand, three hundred twenty-eight".