22028208668 has 24 divisors (see below), whose sum is σ = 38680129152. Its totient is φ = 10976801264.

The previous prime is 22028208641. The next prime is 22028208739. The reversal of 22028208668 is 86680282022.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1671521 + ... + 1684647.

It is an arithmetic number, because the mean of its divisors is an integer number (1611672048).

Almost surely, 2^22028208668 is an apocalyptic number.

It is an amenable number.

22028208668 is a deficient number, since it is larger than the sum of its proper divisors (16651920484).

22028208668 is a wasteful number, since it uses less digits than its factorization.

22028208668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14521 (or 14519 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 44.

The spelling of 22028208668 in words is "twenty-two billion, twenty-eight million, two hundred eight thousand, six hundred sixty-eight".