1728300312 has 72 divisors (see below), whose sum is σ = 4759543620. Its totient is φ = 566568000.

The previous prime is 1728300271. The next prime is 1728300317. The reversal of 1728300312 is 2130038271.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1728300317) by changing a digit.

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 17 ways as a sum of consecutive naturals, for example, 264687 + ... + 271137.

Almost surely, 2^1728300312 is an apocalyptic number.

1728300312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1728300312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2379771810).

1728300312 is an abundant number, since it is smaller than the sum of its proper divisors (3031243308).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1728300312 is a wasteful number, since it uses less digits than its factorization.

1728300312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6585 (or 6517 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 1728300312 is about 41572.8314166837. The cubic root of 1728300312 is about 1200.0695126399.

Adding to 1728300312 its reverse (2130038271), we get a palindrome (3858338583).

The spelling of 1728300312 in words is "one billion, seven hundred twenty-eight million, three hundred thousand, three hundred twelve".