1728520450486 has 16 divisors (see below), whose sum is σ = 2762783163936. Its totient is φ = 808240358016.

The previous prime is 1728520450477. The next prime is 1728520450487. The reversal of 1728520450486 is 6840540258271.

It is a super-3 number, since 3×1728520450486³ (a number of 38 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1728520450487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 161901786 + ... + 161912461.

It is an arithmetic number, because the mean of its divisors is an integer number (172673947746).

Almost surely, 2^{1728520450486} is an apocalyptic number.

1728520450486 is a deficient number, since it is larger than the sum of its proper divisors (1034262713450).

1728520450486 is a wasteful number, since it uses less digits than its factorization.

1728520450486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323814423.

The product of its (nonzero) digits is 4300800, while the sum is 52.

The spelling of 1728520450486 in words is "one trillion, seven hundred twenty-eight billion, five hundred twenty million, four hundred fifty thousand, four hundred eighty-six".