1728006 has 16 divisors (see below), whose sum is σ = 3949824. Its totient is φ = 493704.

The previous prime is 1727989. The next prime is 1728017. The reversal of 1728006 is 6008271.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20530 + ... + 20613.

It is an arithmetic number, because the mean of its divisors is an integer number (246864).

2^1728006 is an apocalyptic number.

1728006 is an abundant number, since it is smaller than the sum of its proper divisors (2221818).

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

1728006 is a wasteful number, since it uses less digits than its factorization.

1728006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41155.

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 1728006 is about 1314.5364201877. The cubic root of 1728006 is about 120.0001388887. Note that the first 3 decimals are identical.

The spelling of 1728006 in words is "one million, seven hundred twenty-eight thousand, six".