2128267827 has 24 divisors (see below), whose sum is σ = 3516155136. Its totient is φ = 1215175536.

The previous prime is 2128267819. The next prime is 2128267829. The reversal of 2128267827 is 7287628212.

It is not a de Polignac number, because 2128267827 - 2³ = 2128267819 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2128267829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 69418 + ... + 95264.

It is an arithmetic number, because the mean of its divisors is an integer number (146506464).

Almost surely, 2^2128267827 is an apocalyptic number.

2128267827 is a deficient number, since it is larger than the sum of its proper divisors (1387887309).

2128267827 is a wasteful number, since it uses less digits than its factorization.

2128267827 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27167 (or 27164 counting only the distinct ones).

The product of its digits is 301056, while the sum is 45.

The square root of 2128267827 is about 46133.1532306215. The cubic root of 2128267827 is about 1286.2994776787.

The spelling of 2128267827 in words is "two billion, one hundred twenty-eight million, two hundred sixty-seven thousand, eight hundred twenty-seven".