1028805507 has 12 divisors (see below), whose sum is σ = 1573467480. Its totient is φ = 645524928.

The previous prime is 1028805499. The next prime is 1028805527. The reversal of 1028805507 is 7055088201.

1028805507 is a `hidden beast` number, since 1 + 0 + 28 + 80 + 550 + 7 = 666.

1028805507 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1028805507 - 2³ = 1028805499 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1028805527) 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, 3361957 + ... + 3362262.

It is an arithmetic number, because the mean of its divisors is an integer number (131122290).

Almost surely, 2^1028805507 is an apocalyptic number.

1028805507 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

1028805507 is a deficient number, since it is larger than the sum of its proper divisors (544661973).

1028805507 is a wasteful number, since it uses less digits than its factorization.

1028805507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6724242 (or 6724239 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 36.

The square root of 1028805507 is about 32074.9981605611. The cubic root of 1028805507 is about 1009.5110880767.

The spelling of 1028805507 in words is "one billion, twenty-eight million, eight hundred five thousand, five hundred seven".