105905512 has 16 divisors (see below), whose sum is σ = 210253860. Its totient is φ = 49837824.

The previous prime is 105905467. The next prime is 105905519. The reversal of 105905512 is 215509501.

It can be written as a sum of positive squares in 2 ways, for example, as 99321156 + 6584356 = 9966^2 + 2566^2 .

It is a super-2 number, since 2×105905512² = 22431954943964288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (105905519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 389223 + ... + 389494.

Almost surely, 2^105905512 is an apocalyptic number.

It is an amenable number.

105905512 is a deficient number, since it is larger than the sum of its proper divisors (104348348).

105905512 is a wasteful number, since it uses less digits than its factorization.

105905512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 778740 (or 778736 counting only the distinct ones).

The product of its (nonzero) digits is 2250, while the sum is 28.

The square root of 105905512 is about 10291.0403750058. The cubic root of 105905512 is about 473.1216858885.

The spelling of 105905512 in words is "one hundred five million, nine hundred five thousand, five hundred twelve".