8210240 has 28 divisors (see below), whose sum is σ = 19551396. Its totient is φ = 3283968.

The previous prime is 8210239. The next prime is 8210249. The reversal of 8210240 is 420128.

It can be written as a sum of positive squares in 2 ways, for example, as 2715904 + 5494336 = 1648^2 + 2344^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8210249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12509 + ... + 13148.

Almost surely, 2^8210240 is an apocalyptic number.

8210240 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8210240 is an abundant number, since it is smaller than the sum of its proper divisors (11341156).

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

8210240 is a wasteful number, since it uses less digits than its factorization.

8210240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25674 (or 25664 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 8210240 is about 2865.3516363616. The cubic root of 8210240 is about 201.7368727022.

Adding to 8210240 its reverse (420128), we get a palindrome (8630368).

The spelling of 8210240 in words is "eight million, two hundred ten thousand, two hundred forty".