2630440 has 16 divisors (see below), whose sum is σ = 5918580. Its totient is φ = 1052160.

The previous prime is 2630431. The next prime is 2630447. The reversal of 2630440 is 440362.

It can be written as a sum of positive squares in 2 ways, for example, as 2452356 + 178084 = 1566^2 + 422^2 .

It is not an unprimeable number, because it can be changed into a prime (2630447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32841 + ... + 32920.

2^2630440 is an apocalyptic number.

2630440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2630440 is an abundant number, since it is smaller than the sum of its proper divisors (3288140).

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

2630440 is a wasteful number, since it uses less digits than its factorization.

2630440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65772 (or 65768 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 2630440 is about 1621.8631261608. The cubic root of 2630440 is about 138.0414354326.

The spelling of 2630440 in words is "two million, six hundred thirty thousand, four hundred forty".