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22104 = 2332307

22104 has 24 divisors (see below), whose sum is σ = 60060. Its totient is φ = 7344.

The previous prime is 22093. The next prime is 22109. The reversal of 22104 is 40122.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22109) by changing a digit.

22104 is an untouchable number, because it is not equal to the sum of proper divisors of any 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 5 ways as a sum of consecutive naturals, for example, 82 + ... + 225.

222104 is an apocalyptic number.

22104 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

22104 is an abundant number, since it is smaller than the sum of its proper divisors (37956).

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

22104 is a wasteful number, since it uses less digits than its factorization.

22104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319 (or 312 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

The square root of 22104 is about 148.6741403204. The cubic root of 22104 is about 28.0644772608.

Adding to 22104 its reverse (40122), we get a palindrome (62226).

The spelling of 22104 in words is "twenty-two thousand, one hundred four", and thus it is an iban number.

Divisors: 1 2 3 4 6 8 9 12 18 24 36 72 307 614 921 1228 1842 2456 2763 3684 5526 7368 11052 22104