8449031280 has 160 divisors (see below), whose sum is σ = 28203552000. Its totient is φ = 2084540416.

The previous prime is 8449031267. The next prime is 8449031299. The reversal of 8449031280 is 821309448.

It is a super-2 number, since 2×8449031280² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 223171 + ... + 258269.

It is an arithmetic number, because the mean of its divisors is an integer number (176272200).

Almost surely, 2^8449031280 is an apocalyptic number.

8449031280 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8449031280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14101776000).

8449031280 is an abundant number, since it is smaller than the sum of its proper divisors (19754520720).

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

8449031280 is a wasteful number, since it uses less digits than its factorization.

8449031280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35191 (or 35185 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 39.

The square root of 8449031280 is about 91918.6122610650. The cubic root of 8449031280 is about 2036.7402187022.

The spelling of 8449031280 in words is "eight billion, four hundred forty-nine million, thirty-one thousand, two hundred eighty".