1930728 has 16 divisors (see below), whose sum is σ = 4826880. Its totient is φ = 643568.

The previous prime is 1930693. The next prime is 1930729. The reversal of 1930728 is 8270391.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1930695 and 1930704.

It is not an unprimeable number, because it can be changed into a prime (1930729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40200 + ... + 40247.

It is an arithmetic number, because the mean of its divisors is an integer number (301680).

2^1930728 is an apocalyptic number.

It is an amenable number.

1930728 is an abundant number, since it is smaller than the sum of its proper divisors (2896152).

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

1930728 is a wasteful number, since it uses less digits than its factorization.

1930728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80456 (or 80452 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 1930728 is about 1389.5063871750. The cubic root of 1930728 is about 124.5203592453.

The spelling of 1930728 in words is "one million, nine hundred thirty thousand, seven hundred twenty-eight".