1003728 has 40 divisors (see below), whose sum is σ = 2830176. Its totient is φ = 304000.

The previous prime is 1003711. The next prime is 1003729. The reversal of 1003728 is 8273001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1003729) 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, 423 + ... + 1478.

2^1003728 is an apocalyptic number.

It is an amenable number.

1003728 is an abundant number, since it is smaller than the sum of its proper divisors (1826448).

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

1003728 is a wasteful number, since it uses less digits than its factorization.

1003728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1923 (or 1917 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 1003728 is about 1001.8622659827. The cubic root of 1003728 is about 100.1241125637.

Adding to 1003728 its reverse (8273001), we get a palindrome (9276729).

It can be divided in two parts, 100 and 3728, that added together give a triangular number (3828 = T₈₇).

The spelling of 1003728 in words is "one million, three thousand, seven hundred twenty-eight".