1728472 has 16 divisors (see below), whose sum is σ = 3310560. Its totient is φ = 845664.

The previous prime is 1728457. The next prime is 1728481. The reversal of 1728472 is 2748271.

It is a congruent number.

It is an unprimeable number.

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, 1923 + ... + 2674.

It is an arithmetic number, because the mean of its divisors is an integer number (206910).

2^1728472 is an apocalyptic number.

It is an amenable number.

1728472 is a deficient number, since it is larger than the sum of its proper divisors (1582088).

1728472 is a wasteful number, since it uses less digits than its factorization.

1728472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4650 (or 4646 counting only the distinct ones).

The product of its digits is 6272, while the sum is 31.

The square root of 1728472 is about 1314.7136570372. The cubic root of 1728472 is about 120.0109249313.

The spelling of 1728472 in words is "one million, seven hundred twenty-eight thousand, four hundred seventy-two".