1728628 has 24 divisors (see below), whose sum is σ = 3495744. Its totient is φ = 739200.

The previous prime is 1728593. The next prime is 1728659. The reversal of 1728628 is 8268271.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a junction number, because it is equal to n+sod(n) for n = 1728593 and 1728602.

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, 408 + ... + 1903.

It is an arithmetic number, because the mean of its divisors is an integer number (145656).

2^1728628 is an apocalyptic number.

It is an amenable number.

1728628 is an abundant number, since it is smaller than the sum of its proper divisors (1767116).

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

1728628 is a wasteful number, since it uses less digits than its factorization.

1728628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2343 (or 2341 counting only the distinct ones).

The product of its digits is 10752, while the sum is 34.

The square root of 1728628 is about 1314.7729842068. The cubic root of 1728628 is about 120.0145352763.

The spelling of 1728628 in words is "one million, seven hundred twenty-eight thousand, six hundred twenty-eight".