22154166 has 24 divisors (see below), whose sum is σ = 48209304. Its totient is φ = 7352640.

The previous prime is 22154137. The next prime is 22154177. The reversal of 22154166 is 66145122.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1785 + ... + 6891.

It is an arithmetic number, because the mean of its divisors is an integer number (2008721).

Almost surely, 2^22154166 is an apocalyptic number.

22154166 is an abundant number, since it is smaller than the sum of its proper divisors (26055138).

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

22154166 is a wasteful number, since it uses less digits than its factorization.

22154166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5356 (or 5353 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 22154166 is about 4706.8212203142. The cubic root of 22154166 is about 280.8569240769.

Adding to 22154166 its reverse (66145122), we get a palindrome (88299288).

The spelling of 22154166 in words is "twenty-two million, one hundred fifty-four thousand, one hundred sixty-six".