22431166 has 8 divisors (see below), whose sum is σ = 34732224. Its totient is φ = 10853760.

The previous prime is 22431163. The next prime is 22431169. The reversal of 22431166 is 66113422.

It is an interprime number because it is at equal distance from previous prime (22431163) and next prime (22431169).

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

It is a self number, because there is not a number n which added to its sum of digits gives 22431166.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22431163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 180835 + ... + 180958.

It is an arithmetic number, because the mean of its divisors is an integer number (4341528).

Almost surely, 2^22431166 is an apocalyptic number.

22431166 is a deficient number, since it is larger than the sum of its proper divisors (12301058).

22431166 is a wasteful number, since it uses less digits than its factorization.

22431166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361826.

The product of its digits is 1728, while the sum is 25.

The square root of 22431166 is about 4736.1551917141. The cubic root of 22431166 is about 282.0226244779.

Adding to 22431166 its reverse (66113422), we get a palindrome (88544588).

The spelling of 22431166 in words is "twenty-two million, four hundred thirty-one thousand, one hundred sixty-six".