1028338400 has 72 divisors (see below), whose sum is σ = 2527572600. Its totient is φ = 408527360.

The previous prime is 1028338397. The next prime is 1028338403. The reversal of 1028338400 is 48338201.

It is a happy number.

1028338400 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1028338397) and next prime (1028338403).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1028338403) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 114887 + ... + 123513.

It is an arithmetic number, because the mean of its divisors is an integer number (35105175).

Almost surely, 2^1028338400 is an apocalyptic number.

1028338400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1028338400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1263786300).

1028338400 is an abundant number, since it is smaller than the sum of its proper divisors (1499234200).

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

1028338400 is a wasteful number, since it uses less digits than its factorization.

1028338400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8796 (or 8783 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 1028338400 is about 32067.7158525518. The cubic root of 1028338400 is about 1009.3582826870.

The spelling of 1028338400 in words is "one billion, twenty-eight million, three hundred thirty-eight thousand, four hundred".