1728140322850 has 12 divisors (see below), whose sum is σ = 3214341000594. Its totient is φ = 691256129120.

The previous prime is 1728140322823. The next prime is 1728140322863. The reversal of 1728140322850 is 582230418271.

It can be written as a sum of positive squares in 3 ways, for example, as 1102065342849 + 626074980001 = 1049793^2 + 791249^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1728140322797 and 1728140322806.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17281403179 + ... + 17281403278.

Almost surely, 2^{1728140322850} is an apocalyptic number.

1728140322850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1728140322850 is a deficient number, since it is larger than the sum of its proper divisors (1486200677744).

1728140322850 is a wasteful number, since it uses less digits than its factorization.

1728140322850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34562806469 (or 34562806464 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 43.

The spelling of 1728140322850 in words is "one trillion, seven hundred twenty-eight billion, one hundred forty million, three hundred twenty-two thousand, eight hundred fifty".