80105188 has 12 divisors (see below), whose sum is σ = 140278572. Its totient is φ = 40025600.

The previous prime is 80105153. The next prime is 80105189. The reversal of 80105188 is 88150108.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 63393444 + 16711744 = 7962^2 + 4088^2 .

It is a super-2 number, since 2×80105188² = 12833682289030688, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (80105189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 888 + ... + 12688.

It is an arithmetic number, because the mean of its divisors is an integer number (11689881).

Almost surely, 2^80105188 is an apocalyptic number.

It is an amenable number.

80105188 is a deficient number, since it is larger than the sum of its proper divisors (60173384).

80105188 is a wasteful number, since it uses less digits than its factorization.

80105188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13502 (or 13500 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 31.

The square root of 80105188 is about 8950.1501663380. The cubic root of 80105188 is about 431.0757058602.

The spelling of 80105188 in words is "eighty million, one hundred five thousand, one hundred eighty-eight".