2502440 has 32 divisors (see below), whose sum is σ = 5714280. Its totient is φ = 986112.

The previous prime is 2502407. The next prime is 2502443. The reversal of 2502440 is 442052.

It can be written as a sum of positive squares in 4 ways, for example, as 2427364 + 75076 = 1558^2 + 274^2 .

It is not an unprimeable number, because it can be changed into a prime (2502443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2492 + ... + 3348.

2^2502440 is an apocalyptic number.

2502440 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 2502440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2857140).

2502440 is an abundant number, since it is smaller than the sum of its proper divisors (3211840).

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

2502440 is a wasteful number, since it uses less digits than its factorization.

2502440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 941 (or 937 counting only the distinct ones).

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

The square root of 2502440 is about 1581.9102376557. The cubic root of 2502440 is about 135.7650209992.

Adding to 2502440 its reverse (442052), we get a palindrome (2944492).

The spelling of 2502440 in words is "two million, five hundred two thousand, four hundred forty".