1728104445 has 48 divisors (see below), whose sum is σ = 3034991232. Its totient is φ = 909532800.

The previous prime is 1728104419. The next prime is 1728104453. The reversal of 1728104445 is 5444018271.

It is a happy number.

It is not a de Polignac number, because 1728104445 - 2¹⁶ = 1728038909 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2376672 + ... + 2377398.

It is an arithmetic number, because the mean of its divisors is an integer number (63228984).

Almost surely, 2^1728104445 is an apocalyptic number.

1728104445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1728104445 is a deficient number, since it is larger than the sum of its proper divisors (1306886787).

1728104445 is a wasteful number, since it uses less digits than its factorization.

1728104445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1362 (or 1359 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 36.

The square root of 1728104445 is about 41570.4756407718. The cubic root of 1728104445 is about 1200.0241765962.

The spelling of 1728104445 in words is "one billion, seven hundred twenty-eight million, one hundred four thousand, four hundred forty-five".