105309208 has 32 divisors (see below), whose sum is σ = 205380000. Its totient is φ = 50561280.

The previous prime is 105309199. The next prime is 105309221. The reversal of 105309208 is 802903501.

It is a super-2 number, since 2×105309208² = 22180058579174528, which contains 22 as substring.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 45028 + ... + 47308.

It is an arithmetic number, because the mean of its divisors is an integer number (6418125).

Almost surely, 2^105309208 is an apocalyptic number.

It is an amenable number.

105309208 is a deficient number, since it is larger than the sum of its proper divisors (100070792).

105309208 is a wasteful number, since it uses less digits than its factorization.

105309208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2515 (or 2511 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 105309208 is about 10262.0274799866. The cubic root of 105309208 is about 472.2320390260.

The spelling of 105309208 in words is "one hundred five million, three hundred nine thousand, two hundred eight".