1323728 has 40 divisors (see below), whose sum is σ = 2999808. Its totient is φ = 554112.

The previous prime is 1323727. The next prime is 1323733. The reversal of 1323728 is 8273231.

It is a junction number, because it is equal to n+sod(n) for n = 1323697 and 1323706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1323727) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5825 + ... + 6047.

2^1323728 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 1323728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1499904).

1323728 is an abundant number, since it is smaller than the sum of its proper divisors (1676080).

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

1323728 is a wasteful number, since it uses less digits than its factorization.

1323728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291 (or 285 counting only the distinct ones).

The product of its digits is 2016, while the sum is 26.

The square root of 1323728 is about 1150.5337891605. The cubic root of 1323728 is about 109.7993034706.

Adding to 1323728 its reverse (8273231), we get a palindrome (9596959).

The spelling of 1323728 in words is "one million, three hundred twenty-three thousand, seven hundred twenty-eight".