1028075105 has 8 divisors (see below), whose sum is σ = 1237633512. Its totient is φ = 819831168.

The previous prime is 1028075071. The next prime is 1028075131. The reversal of 1028075105 is 5015708201.

It can be written as a sum of positive squares in 4 ways, for example, as 139617856 + 888457249 = 11816^2 + 29807^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1028075105 is a prime.

It is a super-2 number, since 2×1028075105² = 2113876843041522050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 326894 + ... + 330023.

It is an arithmetic number, because the mean of its divisors is an integer number (154704189).

Almost surely, 2^1028075105 is an apocalyptic number.

It is an amenable number.

1028075105 is a deficient number, since it is larger than the sum of its proper divisors (209558407).

1028075105 is an equidigital number, since it uses as much as digits as its factorization.

1028075105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 657235.

The product of its (nonzero) digits is 2800, while the sum is 29.

The square root of 1028075105 is about 32063.6102926667. The cubic root of 1028075105 is about 1009.2721302188.

The spelling of 1028075105 in words is "one billion, twenty-eight million, seventy-five thousand, one hundred five".