8228508440 has 64 divisors (see below), whose sum is σ = 19030658400. Its totient is φ = 3199730688.

The previous prime is 8228508397. The next prime is 8228508479. The reversal of 8228508440 is 448058228.

It is a super-2 number, since 2×8228508440² (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 15 ways as a sum of consecutive naturals, for example, 3460532 + ... + 3462908.

Almost surely, 2^8228508440 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8228508440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9515329200).

8228508440 is an abundant number, since it is smaller than the sum of its proper divisors (10802149960).

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

8228508440 is a wasteful number, since it uses less digits than its factorization.

8228508440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4764 (or 4760 counting only the distinct ones).

The product of its (nonzero) digits is 163840, while the sum is 41.

The square root of 8228508440 is about 90711.1263296846. The cubic root of 8228508440 is about 2018.8638874875.

The spelling of 8228508440 in words is "eight billion, two hundred twenty-eight million, five hundred eight thousand, four hundred forty".