8281440288 has 144 divisors (see below), whose sum is σ = 25747315776. Its totient is φ = 2504056320.

The previous prime is 8281440199. The next prime is 8281440289. The reversal of 8281440288 is 8820441828.

It is a tau number, because it is divible by the number of its divisors (144).

It is not an unprimeable number, because it can be changed into a prime (8281440289) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1590906 + ... + 1596102.

It is an arithmetic number, because the mean of its divisors is an integer number (178800804).

Almost surely, 2^8281440288 is an apocalyptic number.

8281440288 is a gapful number since it is divisible by the number (88) 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 8281440288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12873657888).

8281440288 is an abundant number, since it is smaller than the sum of its proper divisors (17465875488).

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

8281440288 is a wasteful number, since it uses less digits than its factorization.

8281440288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5727 (or 5716 counting only the distinct ones).

The product of its (nonzero) digits is 262144, while the sum is 45.

The square root of 8281440288 is about 91002.4191326802. The cubic root of 8281440288 is about 2023.1835797587.

The spelling of 8281440288 in words is "eight billion, two hundred eighty-one million, four hundred forty thousand, two hundred eighty-eight".