1028278368 has 192 divisors, whose sum is σ = 3271726080. Its totient is φ = 312297984.

The previous prime is 1028278357. The next prime is 1028278379. The reversal of 1028278368 is 8638728201.

1028278368 is a `hidden beast` number, since 1 + 0 + 282 + 7 + 8 + 368 = 666.

It is an interprime number because it is at equal distance from previous prime (1028278357) and next prime (1028278379).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 931705 + ... + 932807.

It is an arithmetic number, because the mean of its divisors is an integer number (17040240).

Almost surely, 2^1028278368 is an apocalyptic number.

1028278368 is a gapful number since it is divisible by the number (18) 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 1028278368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1635863040).

1028278368 is an abundant number, since it is smaller than the sum of its proper divisors (2243447712).

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

1028278368 is a wasteful number, since it uses less digits than its factorization.

1028278368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1218 (or 1204 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 45.

The square root of 1028278368 is about 32066.7798196202. The cubic root of 1028278368 is about 1009.3386409764.

The spelling of 1028278368 in words is "one billion, twenty-eight million, two hundred seventy-eight thousand, three hundred sixty-eight".