1028937728 has 96 divisors (see below), whose sum is σ = 2532610080. Its totient is φ = 406978560.

The previous prime is 1028937713. The next prime is 1028937731. The reversal of 1028937728 is 8277398201.

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 7 ways as a sum of consecutive naturals, for example, 183608 + ... + 189128.

It is an arithmetic number, because the mean of its divisors is an integer number (26381355).

Almost surely, 2^1028937728 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 1028937728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1266305040).

1028937728 is an abundant number, since it is smaller than the sum of its proper divisors (1503672352).

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

1028937728 is an equidigital number, since it uses as much as digits as its factorization.

1028937728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5563 (or 5543 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 47.

The square root of 1028937728 is about 32077.0592168297. The cubic root of 1028937728 is about 1009.5543333247.

The spelling of 1028937728 in words is "one billion, twenty-eight million, nine hundred thirty-seven thousand, seven hundred twenty-eight".