8481857280 has 144 divisors (see below), whose sum is σ = 29172867360. Its totient is φ = 2087829504.

The previous prime is 8481857257. The next prime is 8481857281. The reversal of 8481857280 is 827581848.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8481857281) 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, 35035 + ... + 134874.

Almost surely, 2^8481857280 is an apocalyptic number.

8481857280 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 8481857280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14586433680).

8481857280 is an abundant number, since it is smaller than the sum of its proper divisors (20691010080).

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

8481857280 is a wasteful number, since it uses less digits than its factorization.

8481857280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169946 (or 169932 counting only the distinct ones).

The product of its (nonzero) digits is 1146880, while the sum is 51.

The square root of 8481857280 is about 92096.9992996515. Note that the first 3 decimals coincide. The cubic root of 8481857280 is about 2039.3745102742.

The spelling of 8481857280 in words is "eight billion, four hundred eighty-one million, eight hundred fifty-seven thousand, two hundred eighty".