2643040 has 24 divisors (see below), whose sum is σ = 6244560. Its totient is φ = 1057152.

The previous prime is 2643037. The next prime is 2643059. The reversal of 2643040 is 403462.

It is a junction number, because it is equal to n+sod(n) for n = 2642999 and 2643017.

It is a congruent number.

It is an unprimeable number.

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, 8100 + ... + 8419.

It is an arithmetic number, because the mean of its divisors is an integer number (260190).

2^2643040 is an apocalyptic number.

2643040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2643040 is an abundant number, since it is smaller than the sum of its proper divisors (3601520).

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

2643040 is a wasteful number, since it uses less digits than its factorization.

2643040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16534 (or 16526 counting only the distinct ones).

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

The square root of 2643040 is about 1625.7429071043. The cubic root of 2643040 is about 138.2614939644.

The spelling of 2643040 in words is "two million, six hundred forty-three thousand, forty".