2422440 has 64 divisors (see below), whose sum is σ = 8078400. Its totient is φ = 645696.

The previous prime is 2422439. The next prime is 2422447. The reversal of 2422440 is 442242.

2422440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (2422447) 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 15 ways as a sum of consecutive naturals, for example, 42 + ... + 2201.

It is an arithmetic number, because the mean of its divisors is an integer number (126225).

2^2422440 is an apocalyptic number.

2422440 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 2422440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4039200).

2422440 is an abundant number, since it is smaller than the sum of its proper divisors (5655960).

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

2422440 is a wasteful number, since it uses less digits than its factorization.

2422440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2263 (or 2253 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

The square root of 2422440 is about 1556.4189667310. The cubic root of 2422440 is about 134.3025760801.

Adding to 2422440 its reverse (442242), we get a palindrome (2864682).

The spelling of 2422440 in words is "two million, four hundred twenty-two thousand, four hundred forty".