105623444 has 6 divisors (see below), whose sum is σ = 184841034. Its totient is φ = 52811720.

The previous prime is 105623411. The next prime is 105623447. The reversal of 105623444 is 444326501.

It can be written as a sum of positive squares in only one way, i.e., 105472900 + 150544 = 10270^2 + 388^2 .

It is a super-2 number, since 2×105623444² = 22312623844842272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105623447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13202927 + ... + 13202934.

It is an arithmetic number, because the mean of its divisors is an integer number (30806839).

Almost surely, 2^105623444 is an apocalyptic number.

It is an amenable number.

105623444 is a deficient number, since it is larger than the sum of its proper divisors (79217590).

105623444 is a wasteful number, since it uses less digits than its factorization.

105623444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26405865 (or 26405863 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 105623444 is about 10277.3266952063. The cubic root of 105623444 is about 472.7012760986.

Adding to 105623444 its reverse (444326501), we get a palindrome (549949945).

The spelling of 105623444 in words is "one hundred five million, six hundred twenty-three thousand, four hundred forty-four".