8219449128 has 32 divisors (see below), whose sum is σ = 22416680160. Its totient is φ = 2490742080.

The previous prime is 8219449127. The next prime is 8219449141.

8219449128 is nontrivially palindromic in base 10.

It is not an unprimeable number, because it can be changed into a prime (8219449127) 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 7 ways as a sum of consecutive naturals, for example, 15566875 + ... + 15567402.

It is an arithmetic number, because the mean of its divisors is an integer number (700521255).

Almost surely, 2^8219449128 is an apocalyptic number.

8219449128 is a gapful number since it is divisible by the number (88) formed by its first and last digit.

It is an amenable number.

8219449128 is an abundant number, since it is smaller than the sum of its proper divisors (14197231032).

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

8219449128 is a wasteful number, since it uses less digits than its factorization.

8219449128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31134297 (or 31134293 counting only the distinct ones).

The product of its digits is 331776, while the sum is 48.

The square root of 8219449128 is about 90661.1776230598. The cubic root of 8219449128 is about 2018.1227149273.

The spelling of 8219449128 in words is "eight billion, two hundred nineteen million, four hundred forty-nine thousand, one hundred twenty-eight".