22208008 has 8 divisors (see below), whose sum is σ = 41640030. Its totient is φ = 11104000.

The previous prime is 22207973. The next prime is 22208009. The reversal of 22208008 is 80080222.

It can be written as a sum of positive squares in only one way, i.e., 20958084 + 1249924 = 4578^2 + 1118^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 22208008.

It is not an unprimeable number, because it can be changed into a prime (22208009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1387993 + ... + 1388008.

Almost surely, 2^22208008 is an apocalyptic number.

It is an amenable number.

22208008 is a deficient number, since it is larger than the sum of its proper divisors (19432022).

22208008 is a wasteful number, since it uses less digits than its factorization.

22208008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2776007 (or 2776003 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 22.

The square root of 22208008 is about 4712.5373208071. The cubic root of 22208008 is about 281.0842652852.

The spelling of 22208008 in words is "twenty-two million, two hundred eight thousand, eight".