2522240 has 64 divisors (see below), whose sum is σ = 6903360. Its totient is φ = 863232.

The previous prime is 2522237. The next prime is 2522257. The reversal of 2522240 is 422252.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4199 + ... + 4761.

It is an arithmetic number, because the mean of its divisors is an integer number (107865).

2^2522240 is an apocalyptic number.

2522240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2522240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3451680).

2522240 is an abundant number, since it is smaller than the sum of its proper divisors (4381120).

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

2522240 is an equidigital number, since it uses as much as digits as its factorization.

2522240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 589 (or 577 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 17.

The square root of 2522240 is about 1588.1561636061. The cubic root of 2522240 is about 136.1221509240.

Adding to 2522240 its reverse (422252), we get a palindrome (2944492).

The spelling of 2522240 in words is "two million, five hundred twenty-two thousand, two hundred forty".