22216770 has 48 divisors (see below), whose sum is σ = 59634432. Its totient is φ = 5732640.

The previous prime is 22216769. The next prime is 22216829. The reversal of 22216770 is 7761222.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1192 + ... + 6771.

It is an arithmetic number, because the mean of its divisors is an integer number (1242384).

Almost surely, 2^22216770 is an apocalyptic number.

22216770 is an abundant number, since it is smaller than the sum of its proper divisors (37417662).

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

22216770 is a wasteful number, since it uses less digits than its factorization.

22216770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8007 (or 8004 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 27.

The square root of 22216770 is about 4713.4668769389. The cubic root of 22216770 is about 281.1212269750.

Adding to 22216770 its reverse (7761222), we get a palindrome (29977992).

The spelling of 22216770 in words is "twenty-two million, two hundred sixteen thousand, seven hundred seventy".