1728606 has 24 divisors (see below), whose sum is σ = 3801672. Its totient is φ = 523600.

The previous prime is 1728593. The next prime is 1728659. The reversal of 1728606 is 6068271.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 465 + ... + 1916.

It is an arithmetic number, because the mean of its divisors is an integer number (158403).

2^1728606 is an apocalyptic number.

1728606 is an abundant number, since it is smaller than the sum of its proper divisors (2073066).

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

1728606 is a wasteful number, since it uses less digits than its factorization.

1728606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2408 (or 2397 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 1728606 is about 1314.7646177168. The cubic root of 1728606 is about 120.0140261383.

It can be divided in two parts, 172 and 8606, that added together give a palindrome (8778).

The spelling of 1728606 in words is "one million, seven hundred twenty-eight thousand, six hundred six".