22281008 has 20 divisors (see below), whose sum is σ = 44089440. Its totient is φ = 10903104.

The previous prime is 22280989. The next prime is 22281023. The reversal of 22281008 is 80018222.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14063 + ... + 15566.

It is an arithmetic number, because the mean of its divisors is an integer number (2204472).

Almost surely, 2^22281008 is an apocalyptic number.

It is an amenable number.

22281008 is a deficient number, since it is larger than the sum of its proper divisors (21808432).

22281008 is a wasteful number, since it uses less digits than its factorization.

22281008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29684 (or 29678 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 23.

The square root of 22281008 is about 4720.2762631016. The cubic root of 22281008 is about 281.3919127111.

The spelling of 22281008 in words is "twenty-two million, two hundred eighty-one thousand, eight".