1728481744 has 40 divisors (see below), whose sum is σ = 3655828512. Its totient is φ = 785147520.

The previous prime is 1728481721. The next prime is 1728481757. The reversal of 1728481744 is 4471848271.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1728481694 and 1728481703.

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 7 ways as a sum of consecutive naturals, for example, 401427 + ... + 405709.

Almost surely, 2^1728481744 is an apocalyptic number.

It is an amenable number.

1728481744 is an abundant number, since it is smaller than the sum of its proper divisors (1927346768).

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

1728481744 is a wasteful number, since it uses less digits than its factorization.

1728481744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6595 (or 6589 counting only the distinct ones).

The product of its digits is 401408, while the sum is 46.

The square root of 1728481744 is about 41575.0134576046. The cubic root of 1728481744 is about 1200.1115044535. Note that the first 3 decimals are identical.

It can be divided in two parts, 1728481 and 744, that added together give a square (1729225 = 1315²).

The spelling of 1728481744 in words is "one billion, seven hundred twenty-eight million, four hundred eighty-one thousand, seven hundred forty-four".