1683728 has 20 divisors (see below), whose sum is σ = 3333120. Its totient is φ = 823584.

The previous prime is 1683719. The next prime is 1683733. The reversal of 1683728 is 8273861.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 368 + ... + 1871.

It is an arithmetic number, because the mean of its divisors is an integer number (166656).

2^1683728 is an apocalyptic number.

It is an amenable number.

1683728 is a deficient number, since it is larger than the sum of its proper divisors (1649392).

1683728 is a wasteful number, since it uses less digits than its factorization.

1683728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2294 (or 2288 counting only the distinct ones).

The product of its digits is 16128, while the sum is 35.

The square root of 1683728 is about 1297.5854499801. The cubic root of 1683728 is about 118.9663063991.

The spelling of 1683728 in words is "one million, six hundred eighty-three thousand, seven hundred twenty-eight".