1728105207612 has 48 divisors (see below), whose sum is σ = 4611855924480. Its totient is φ = 493361269632.

The previous prime is 1728105207599. The next prime is 1728105207617. The reversal of 1728105207612 is 2167025018271.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1728105207617) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7871818 + ... + 8088369.

It is an arithmetic number, because the mean of its divisors is an integer number (96080331760).

Almost surely, 2^{1728105207612} is an apocalyptic number.

1728105207612 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1728105207612 is an abundant number, since it is smaller than the sum of its proper divisors (2883750716868).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1728105207612 is a wasteful number, since it uses less digits than its factorization.

1728105207612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15961490 (or 15961488 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 42.

The spelling of 1728105207612 in words is "one trillion, seven hundred twenty-eight billion, one hundred five million, two hundred seven thousand, six hundred twelve".