8241240 has 64 divisors (see below), whose sum is σ = 28258560. Its totient is φ = 1883520.

The previous prime is 8241229. The next prime is 8241263. The reversal of 8241240 is 421428.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 4066 + ... + 5745.

It is an arithmetic number, because the mean of its divisors is an integer number (441540).

Almost surely, 2^8241240 is an apocalyptic number.

It is an amenable number.

8241240 is an abundant number, since it is smaller than the sum of its proper divisors (20017320).

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

8241240 is a wasteful number, since it uses less digits than its factorization.

8241240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9832 (or 9828 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

The square root of 8241240 is about 2870.7559979908. The cubic root of 8241240 is about 201.9904580011.

Adding to 8241240 its reverse (421428), we get a palindrome (8662668).

The spelling of 8241240 in words is "eight million, two hundred forty-one thousand, two hundred forty".