2500840 has 32 divisors (see below), whose sum is σ = 5690880. Its totient is φ = 988992.

The previous prime is 2500831. The next prime is 2500843. The reversal of 2500840 is 480052.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2500843) 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, 3817 + ... + 4423.

It is an arithmetic number, because the mean of its divisors is an integer number (177840).

2^2500840 is an apocalyptic number.

2500840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2500840 is an abundant number, since it is smaller than the sum of its proper divisors (3190040).

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

2500840 is a wasteful number, since it uses less digits than its factorization.

2500840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 721 (or 717 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 2500840 is about 1581.4044390984. The cubic root of 2500840 is about 135.7360798662.

Adding to 2500840 its reverse (480052), we get a palindrome (2980892).

The spelling of 2500840 in words is "two million, five hundred thousand, eight hundred forty".