2548640 has 48 divisors (see below), whose sum is σ = 6382152. Its totient is φ = 958464.

The previous prime is 2548639. The next prime is 2548643. The reversal of 2548640 is 468452.

It can be written as a sum of positive squares in 4 ways, for example, as 1752976 + 795664 = 1324^2 + 892^2 .

It is not an unprimeable number, because it can be changed into a prime (2548643) 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, 2252 + ... + 3188.

2^2548640 is an apocalyptic number.

2548640 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 2548640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3191076).

2548640 is an abundant number, since it is smaller than the sum of its proper divisors (3833512).

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

2548640 is a wasteful number, since it uses less digits than its factorization.

2548640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 969 (or 961 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 29.

The square root of 2548640 is about 1596.4460529564. The cubic root of 2548640 is about 136.5954285352.

The spelling of 2548640 in words is "two million, five hundred forty-eight thousand, six hundred forty".