1728004 has 6 divisors (see below), whose sum is σ = 3024014. Its totient is φ = 864000.

The previous prime is 1727989. The next prime is 1728017. The reversal of 1728004 is 4008271.

It can be written as a sum of positive squares in only one way, i.e., 921600 + 806404 = 960^2 + 898^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 215997 + ... + 216004.

2^1728004 is an apocalyptic number.

It is an amenable number.

1728004 is a deficient number, since it is larger than the sum of its proper divisors (1296010).

1728004 is a wasteful number, since it uses less digits than its factorization.

1728004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432005 (or 432003 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 22.

The square root of 1728004 is about 1314.5356594631. The cubic root of 1728004 is about 120.0000925925. Note that the first 4 decimals are identical.

The spelling of 1728004 in words is "one million, seven hundred twenty-eight thousand, four".