866152128 has 28 divisors (see below), whose sum is σ = 2291694680. Its totient is φ = 288717312.

The previous prime is 866152127. The next prime is 866152163. The reversal of 866152128 is 821251668.

It is not an unprimeable number, because it can be changed into a prime (866152123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2255413 + ... + 2255796.

Almost surely, 2^866152128 is an apocalyptic number.

It is an amenable number.

866152128 is an abundant number, since it is smaller than the sum of its proper divisors (1425542552).

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

866152128 is a wasteful number, since it uses less digits than its factorization.

866152128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4511224 (or 4511214 counting only the distinct ones).

The product of its digits is 46080, while the sum is 39.

The square root of 866152128 is about 29430.4625855592. The cubic root of 866152128 is about 953.2307834117.

The spelling of 866152128 in words is "eight hundred sixty-six million, one hundred fifty-two thousand, one hundred twenty-eight".