105243808 has 24 divisors (see below), whose sum is σ = 210041748. Its totient is φ = 51899904.

The previous prime is 105243781. The next prime is 105243839. The reversal of 105243808 is 808342501.

It can be written as a sum of positive squares in 2 ways, for example, as 103469584 + 1774224 = 10172^2 + 1332^2 .

It is a super-2 number, since 2×105243808² = 22152518244681728, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 105243808.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20191 + ... + 24862.

Almost surely, 2^105243808 is an apocalyptic number.

It is an amenable number.

105243808 is a deficient number, since it is larger than the sum of its proper divisors (104797940).

105243808 is an equidigital number, since it uses as much as digits as its factorization.

105243808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45136 (or 45128 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 31.

The square root of 105243808 is about 10258.8404802882. The cubic root of 105243808 is about 472.1342622933.

The spelling of 105243808 in words is "one hundred five million, two hundred forty-three thousand, eight hundred eight".