1019728 has 40 divisors (see below), whose sum is σ = 2196288. Its totient is φ = 456192.

The previous prime is 1019723. The next prime is 1019729. The reversal of 1019728 is 8279101.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 1019696 and 1019705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1019723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6175 + ... + 6337.

2^1019728 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1019728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1098144).

1019728 is an abundant number, since it is smaller than the sum of its proper divisors (1176560).

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

1019728 is a wasteful number, since it uses less digits than its factorization.

1019728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211 (or 205 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 28.

The square root of 1019728 is about 1009.8158247918. The cubic root of 1019728 is about 100.6533224031.

The spelling of 1019728 in words is "one million, nineteen thousand, seven hundred twenty-eight".