2640208 has 20 divisors (see below), whose sum is σ = 5281408. Its totient is φ = 1277280.

The previous prime is 2640181. The next prime is 2640217. The reversal of 2640208 is 8020462.

2640208 is an admirable number.

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, 2166 + ... + 3157.

2^2640208 is an apocalyptic number.

It is an amenable number.

2640208 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2640208 is a wasteful number, since it uses less digits than its factorization.

2640208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5362 (or 5356 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 2640208 is about 1624.8716872418. The cubic root of 2640208 is about 138.2120942222.

The spelling of 2640208 in words is "two million, six hundred forty thousand, two hundred eight".