1028286380 has 96 divisors (see below), whose sum is σ = 2402326080. Its totient is φ = 366612480.

The previous prime is 1028286373. The next prime is 1028286401. The reversal of 1028286380 is 836828201.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3285104 + ... + 3285416.

It is an arithmetic number, because the mean of its divisors is an integer number (25024230).

Almost surely, 2^1028286380 is an apocalyptic number.

1028286380 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 1028286380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1201163040).

1028286380 is an abundant number, since it is smaller than the sum of its proper divisors (1374039700).

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

1028286380 is a wasteful number, since it uses less digits than its factorization.

1028286380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 579 (or 577 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 38.

The square root of 1028286380 is about 32066.9047461709. The cubic root of 1028286380 is about 1009.3412624456.

The spelling of 1028286380 in words is "one billion, twenty-eight million, two hundred eighty-six thousand, three hundred eighty".