1728000002 has 4 divisors (see below), whose sum is σ = 2592000006. Its totient is φ = 864000000.

The previous prime is 1727999993. The next prime is 1728000013. The reversal of 1728000002 is 2000008271.

1728000002 = 23999² + 24000² + 24001².

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2000008271 = 9133 ⋅218987.

It can be written as a sum of positive squares in only one way, i.e., 924220801 + 803779201 = 30401^2 + 28351^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 431999999 + ... + 432000002.

Almost surely, 2^1728000002 is an apocalyptic number.

1728000002 is a deficient number, since it is larger than the sum of its proper divisors (864000004).

1728000002 is an equidigital number, since it uses as much as digits as its factorization.

1728000002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 864000003.

The product of its (nonzero) digits is 224, while the sum is 20.

The square root of 1728000002 is about 41569.2194057093. The cubic root of 1728000002 is about 1200.0000004630. Note that the first 6 decimals are identical.

Adding to 1728000002 its reverse (2000008271), we get a palindrome (3728008273).

The spelling of 1728000002 in words is "one billion, seven hundred twenty-eight million, two", and thus it is an aban number.