1728526128 has 80 divisors (see below), whose sum is σ = 5164836096. Its totient is φ = 487906560.

The previous prime is 1728526091. The next prime is 1728526133. The reversal of 1728526128 is 8216258271.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1728526128.

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, 3103 + ... + 58878.

Almost surely, 2^1728526128 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1728526128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2582418048).

1728526128 is an abundant number, since it is smaller than the sum of its proper divisors (3436309968).

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

1728526128 is a wasteful number, since it uses less digits than its factorization.

1728526128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62082 (or 62076 counting only the distinct ones).

The product of its digits is 107520, while the sum is 42.

The square root of 1728526128 is about 41575.5472363263. The cubic root of 1728526128 is about 1200.1217765305.

The spelling of 1728526128 in words is "one billion, seven hundred twenty-eight million, five hundred twenty-six thousand, one hundred twenty-eight".