22105404 has 36 divisors (see below), whose sum is σ = 56021784. Its totient is φ = 7349472.

The previous prime is 22105403. The next prime is 22105439. The reversal of 22105404 is 40450122.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22105403) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23919 + ... + 24825.

Almost surely, 2^22105404 is an apocalyptic number.

It is an amenable number.

22105404 is an abundant number, since it is smaller than the sum of its proper divisors (33916380).

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

22105404 is a wasteful number, since it uses less digits than its factorization.

22105404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1594 (or 1589 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 22105404 is about 4701.6384378214. The cubic root of 22105404 is about 280.6507144721.

Adding to 22105404 its reverse (40450122), we get a palindrome (62555526).

The spelling of 22105404 in words is "twenty-two million, one hundred five thousand, four hundred four".