2530644 has 48 divisors (see below), whose sum is σ = 6314112. Its totient is φ = 787072.

The previous prime is 2530597. The next prime is 2530663. The reversal of 2530644 is 4460352.

2530644 = T₄₁ + T₄₂ + ... + T₂₄₇.

2530644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 14542 + ... + 14714.

It is an arithmetic number, because the mean of its divisors is an integer number (131544).

2^2530644 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 2530644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3157056).

2530644 is an abundant number, since it is smaller than the sum of its proper divisors (3783468).

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

2530644 is a wasteful number, since it uses less digits than its factorization.

2530644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256 (or 254 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 2530644 is about 1590.7997988433. The cubic root of 2530644 is about 136.2731677911.

Adding to 2530644 its reverse (4460352), we get a palindrome (6990996).

The spelling of 2530644 in words is "two million, five hundred thirty thousand, six hundred forty-four".