1023728 has 20 divisors (see below), whose sum is σ = 2005080. Its totient is φ = 506304.

The previous prime is 1023721. The next prime is 1023731. The reversal of 1023728 is 8273201.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1023721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1451 + ... + 2037.

It is an arithmetic number, because the mean of its divisors is an integer number (100254).

2^1023728 is an apocalyptic number.

It is an amenable number.

1023728 is a deficient number, since it is larger than the sum of its proper divisors (981352).

1023728 is a wasteful number, since it uses less digits than its factorization.

1023728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 704 (or 698 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 1023728 is about 1011.7944455274. The cubic root of 1023728 is about 100.7847587605.

Adding to 1023728 its reverse (8273201), we get a palindrome (9296929).

The spelling of 1023728 in words is "one million, twenty-three thousand, seven hundred twenty-eight".