22420166 has 16 divisors (see below), whose sum is σ = 34439904. Its totient is φ = 10942464.

The previous prime is 22420163. The next prime is 22420183. The reversal of 22420166 is 66102422.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22420163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26831 + ... + 27653.

It is an arithmetic number, because the mean of its divisors is an integer number (2152494).

Almost surely, 2^22420166 is an apocalyptic number.

22420166 is a deficient number, since it is larger than the sum of its proper divisors (12019738).

22420166 is a wasteful number, since it uses less digits than its factorization.

22420166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1135.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 22420166 is about 4734.9937697953. The cubic root of 22420166 is about 281.9765166636.

Adding to 22420166 its reverse (66102422), we get a palindrome (88522588).

The spelling of 22420166 in words is "twenty-two million, four hundred twenty thousand, one hundred sixty-six".