1728012 has 96 divisors (see below), whose sum is σ = 5080320. Its totient is φ = 449280.

The previous prime is 1727989. The next prime is 1728017. The reversal of 1728012 is 2108271.

It is a self number, because there is not a number n which added to its sum of digits gives 1728012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1728017) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32578 + ... + 32630.

It is an arithmetic number, because the mean of its divisors is an integer number (52920).

2^1728012 is an apocalyptic number.

1728012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1728012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2540160).

1728012 is an abundant number, since it is smaller than the sum of its proper divisors (3352308).

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

1728012 is a wasteful number, since it uses less digits than its factorization.

1728012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103 (or 101 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 21.

The square root of 1728012 is about 1314.5387023591. The cubic root of 1728012 is about 120.0002777771. Note that the first 3 decimals are identical.

The spelling of 1728012 in words is "one million, seven hundred twenty-eight thousand, twelve".