7822240 has 24 divisors (see below), whose sum is σ = 18480420. Its totient is φ = 3128832.

The previous prime is 7822237. The next prime is 7822247. The reversal of 7822240 is 422287.

It can be written as a sum of positive squares in 2 ways, for example, as 7817616 + 4624 = 2796^2 + 68^2 .

It is a super-2 number, since 2×7822240² = 122374877235200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7822247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24285 + ... + 24604.

Almost surely, 2^7822240 is an apocalyptic number.

It is an amenable number.

7822240 is an abundant number, since it is smaller than the sum of its proper divisors (10658180).

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

7822240 is a wasteful number, since it uses less digits than its factorization.

7822240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48904 (or 48896 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 25.

The square root of 7822240 is about 2796.8267733272. The cubic root of 7822240 is about 198.5075574448.

The spelling of 7822240 in words is "seven million, eight hundred twenty-two thousand, two hundred forty".