1128250017 has 24 divisors (see below), whose sum is σ = 1689728040. Its totient is φ = 724577280.

The previous prime is 1128249989. The next prime is 1128250021. The reversal of 1128250017 is 7100528211.

It can be written as a sum of positive squares in 4 ways, for example, as 8946081 + 1119303936 = 2991^2 + 33456^2 .

It is not a de Polignac number, because 1128250017 - 2¹⁴ = 1128233633 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1128250037) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 115633 + ... + 125009.

It is an arithmetic number, because the mean of its divisors is an integer number (70405335).

Almost surely, 2^1128250017 is an apocalyptic number.

It is an amenable number.

1128250017 is a deficient number, since it is larger than the sum of its proper divisors (561478023).

1128250017 is a wasteful number, since it uses less digits than its factorization.

1128250017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9873 (or 9870 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 27.

The square root of 1128250017 is about 33589.4331151926. The cubic root of 1128250017 is about 1041.0424757118.

Adding to 1128250017 its reverse (7100528211), we get a palindrome (8228778228).

The spelling of 1128250017 in words is "one billion, one hundred twenty-eight million, two hundred fifty thousand, seventeen".