8238840 has 64 divisors (see below), whose sum is σ = 25090560. Its totient is φ = 2163840.

The previous prime is 8238823. The next prime is 8238847. The reversal of 8238840 is 488328.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8238847) 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, 8037 + ... + 9003.

It is an arithmetic number, because the mean of its divisors is an integer number (392040).

Almost surely, 2^8238840 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 8238840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12545280).

8238840 is an abundant number, since it is smaller than the sum of its proper divisors (16851720).

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

8238840 is a wasteful number, since it uses less digits than its factorization.

8238840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1052 (or 1048 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 33.

The square root of 8238840 is about 2870.3379591957. The cubic root of 8238840 is about 201.9708483240.

It can be divided in two parts, 82388 and 40, that added together give a palindrome (82428).

The spelling of 8238840 in words is "eight million, two hundred thirty-eight thousand, eight hundred forty".