1029728 has 24 divisors (see below), whose sum is σ = 2317392. Its totient is φ = 441216.

The previous prime is 1029697. The next prime is 1029731. The reversal of 1029728 is 8279201.

It is a happy number.

It is a nialpdrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 1029728.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2075 + ... + 2522.

It is an arithmetic number, because the mean of its divisors is an integer number (96558).

2^1029728 is an apocalyptic number.

It is an amenable number.

1029728 is an abundant number, since it is smaller than the sum of its proper divisors (1287664).

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

1029728 is an equidigital number, since it uses as much as digits as its factorization.

1029728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4614 (or 4606 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 1029728 is about 1014.7551428793. The cubic root of 1029728 is about 100.9812728733.

The spelling of 1029728 in words is "one million, twenty-nine thousand, seven hundred twenty-eight".