1728395855 has 16 divisors (see below), whose sum is σ = 2177280000. Its totient is φ = 1315426080.

The previous prime is 1728395843. The next prime is 1728395909. The reversal of 1728395855 is 5585938271.

It is not a de Polignac number, because 1728395855 - 2⁴ = 1728395839 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1728395797 and 1728395806.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85355 + ... + 103644.

It is an arithmetic number, because the mean of its divisors is an integer number (136080000).

Almost surely, 2^1728395855 is an apocalyptic number.

1728395855 is a deficient number, since it is larger than the sum of its proper divisors (448884145).

1728395855 is a wasteful number, since it uses less digits than its factorization.

1728395855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189094.

The product of its digits is 3024000, while the sum is 53.

The square root of 1728395855 is about 41573.9805046378. The cubic root of 1728395855 is about 1200.0916261056.

The spelling of 1728395855 in words is "one billion, seven hundred twenty-eight million, three hundred ninety-five thousand, eight hundred fifty-five".