2440656 has 60 divisors (see below), whose sum is σ = 7239492. Its totient is φ = 764928.

The previous prime is 2440649. The next prime is 2440657. The reversal of 2440656 is 6560442.

It is a happy number.

2440656 is a `hidden beast` number, since 2 + 4 + 4 + 0 + 656 = 666.

2440656 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 2005056 + 435600 = 1416^2 + 660^2 .

It is a nialpdrome in base 12.

It is a zygodrome in base 5.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2440657) 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 11 ways as a sum of consecutive naturals, for example, 1950 + ... + 2946.

2^2440656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2440656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3619746).

2440656 is an abundant number, since it is smaller than the sum of its proper divisors (4798836).

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

2440656 is a wasteful number, since it uses less digits than its factorization.

2440656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1028 (or 1019 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 2440656 is about 1562.2599015529. The cubic root of 2440656 is about 134.6383737357.

The spelling of 2440656 in words is "two million, four hundred forty thousand, six hundred fifty-six".