1403728 has 20 divisors (see below), whose sum is σ = 2767680. Its totient is φ = 689504.

The previous prime is 1403693. The next prime is 1403747. The reversal of 1403728 is 8273041.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 201 + ... + 1687.

It is an arithmetic number, because the mean of its divisors is an integer number (138384).

2^1403728 is an apocalyptic number.

It is an amenable number.

1403728 is a deficient number, since it is larger than the sum of its proper divisors (1363952).

1403728 is a wasteful number, since it uses less digits than its factorization.

1403728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1554 (or 1548 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 1403728 is about 1184.7902768001. The cubic root of 1403728 is about 111.9681031618.

Adding to 1403728 its reverse (8273041), we get a palindrome (9676769).

The spelling of 1403728 in words is "one million, four hundred three thousand, seven hundred twenty-eight".