2643628 has 12 divisors (see below), whose sum is σ = 4982320. Its totient is φ = 1220112.

The previous prime is 2643607. The next prime is 2643629. The reversal of 2643628 is 8263462.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 2643628.

It is not an unprimeable number, because it can be changed into a prime (2643629) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25368 + ... + 25471.

2^2643628 is an apocalyptic number.

It is an amenable number.

2643628 is a deficient number, since it is larger than the sum of its proper divisors (2338692).

2643628 is a wasteful number, since it uses less digits than its factorization.

2643628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50856 (or 50854 counting only the distinct ones).

The product of its digits is 13824, while the sum is 31.

The square root of 2643628 is about 1625.9237374490. The cubic root of 2643628 is about 138.2717462661.

The spelling of 2643628 in words is "two million, six hundred forty-three thousand, six hundred twenty-eight".