1728000003 has 16 divisors (see below), whose sum is σ = 2523653280. Its totient is φ = 1046846976.

The previous prime is 1727999993. The next prime is 1728000013. The reversal of 1728000003 is 3000008271.

It is an interprime number because it is at equal distance from previous prime (1727999993) and next prime (1728000013).

It is not a de Polignac number, because 1728000003 - 2¹⁷ = 1727868931 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1728000013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 582700 + ... + 585657.

It is an arithmetic number, because the mean of its divisors is an integer number (157728330).

Almost surely, 2^1728000003 is an apocalyptic number.

1728000003 is a deficient number, since it is larger than the sum of its proper divisors (795653277).

1728000003 is a wasteful number, since it uses less digits than its factorization.

1728000003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1168406.

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

The square root of 1728000003 is about 41569.2194177374. The cubic root of 1728000003 is about 1200.0000006944. Note that the first 6 decimals are identical.

Adding to 1728000003 its reverse (3000008271), we get a palindrome (4728008274).

The spelling of 1728000003 in words is "one billion, seven hundred twenty-eight million, three", and thus it is an aban number.