2502644 has 6 divisors (see below), whose sum is σ = 4379634. Its totient is φ = 1251320.

The previous prime is 2502637. The next prime is 2502649. The reversal of 2502644 is 4462052.

It can be written as a sum of positive squares in only one way, i.e., 2371600 + 131044 = 1540^2 + 362^2 .

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2502649) 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 as a sum of consecutive naturals, namely, 312827 + ... + 312834.

It is an arithmetic number, because the mean of its divisors is an integer number (729939).

2^2502644 is an apocalyptic number.

It is an amenable number.

2502644 is a deficient number, since it is larger than the sum of its proper divisors (1876990).

2502644 is a wasteful number, since it uses less digits than its factorization.

2502644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 625665 (or 625663 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 2502644 is about 1581.9747153479. The cubic root of 2502644 is about 135.7687101068.

Adding to 2502644 its reverse (4462052), we get a palindrome (6964696).

The spelling of 2502644 in words is "two million, five hundred two thousand, six hundred forty-four".