2688422444 has 24 divisors (see below), whose sum is σ = 4772233200. Its totient is φ = 1325044800.

The previous prime is 2688422383. The next prime is 2688422489. The reversal of 2688422444 is 4442248862.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 2688422395 and 2688422404.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77987 + ... + 107045.

It is an arithmetic number, because the mean of its divisors is an integer number (198843050).

Almost surely, 2^2688422444 is an apocalyptic number.

It is an amenable number.

2688422444 is a deficient number, since it is larger than the sum of its proper divisors (2083810756).

2688422444 is a wasteful number, since it uses less digits than its factorization.

2688422444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29393 (or 29391 counting only the distinct ones).

The product of its digits is 786432, while the sum is 44.

The square root of 2688422444 is about 51849.9994599807. Note that the first 3 decimals coincide. The cubic root of 2688422444 is about 1390.4834927602.

The spelling of 2688422444 in words is "two billion, six hundred eighty-eight million, four hundred twenty-two thousand, four hundred forty-four".