8642629128 has 64 divisors (see below), whose sum is σ = 25489797120. Its totient is φ = 2389665600.

The previous prime is 8642629117. The next prime is 8642629129. The reversal of 8642629128 is 8219262468.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (8642629129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 824538 + ... + 834953.

It is an arithmetic number, because the mean of its divisors is an integer number (398278080).

Almost surely, 2^8642629128 is an apocalyptic number.

It is an amenable number.

8642629128 is an abundant number, since it is smaller than the sum of its proper divisors (16847167992).

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

8642629128 is a wasteful number, since it uses less digits than its factorization.

8642629128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1659538 (or 1659534 counting only the distinct ones).

The product of its digits is 663552, while the sum is 48.

The square root of 8642629128 is about 92965.7416901516. The cubic root of 8642629128 is about 2052.1792512761.

The spelling of 8642629128 in words is "eight billion, six hundred forty-two million, six hundred twenty-nine thousand, one hundred twenty-eight".