1728871573 has 8 divisors (see below), whose sum is σ = 2031122016. Its totient is φ = 1450801200.

The previous prime is 1728871561. The next prime is 1728871589. The reversal of 1728871573 is 3751788271.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1728871573 - 2²¹ = 1726774421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1728871523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6044863 + ... + 6045148.

It is an arithmetic number, because the mean of its divisors is an integer number (253890252).

Almost surely, 2^1728871573 is an apocalyptic number.

1728871573 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1728871573 is a deficient number, since it is larger than the sum of its proper divisors (302250443).

1728871573 is a wasteful number, since it uses less digits than its factorization.

1728871573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12090035.

The product of its digits is 658560, while the sum is 49.

The square root of 1728871573 is about 41579.7014539547. The cubic root of 1728871573 is about 1200.2017190985.

The spelling of 1728871573 in words is "one billion, seven hundred twenty-eight million, eight hundred seventy-one thousand, five hundred seventy-three".