22288818 has 8 divisors (see below), whose sum is σ = 44577648. Its totient is φ = 7429604.

The previous prime is 22288807. The next prime is 22288829. The reversal of 22288818 is 81888222.

It is an interprime number because it is at equal distance from previous prime (22288807) and next prime (22288829).

It is a sphenic number, since it is the product of 3 distinct primes.

22288818 is an admirable number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 1857396 + ... + 1857407.

It is an arithmetic number, because the mean of its divisors is an integer number (5572206).

Almost surely, 2^22288818 is an apocalyptic number.

22288818 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22288818 is a wasteful number, since it uses less digits than its factorization.

22288818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3714808.

The product of its digits is 32768, while the sum is 39.

The square root of 22288818 is about 4721.1034727064. The cubic root of 22288818 is about 281.4247869585.

The spelling of 22288818 in words is "twenty-two million, two hundred eighty-eight thousand, eight hundred eighteen".