305686226 has 16 divisors (see below), whose sum is σ = 484332288. Its totient is φ = 144471600.

The previous prime is 305686223. The next prime is 305686229. The reversal of 305686226 is 622686503.

It is an interprime number because it is at equal distance from previous prime (305686223) and next prime (305686229).

It is a super-2 number, since 2×305686226² = 186888137532246152, 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 305686226.

It is not an unprimeable number, because it can be changed into a prime (305686223) 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 7 ways as a sum of consecutive naturals, for example, 54665 + ... + 59996.

It is an arithmetic number, because the mean of its divisors is an integer number (30270768).

Almost surely, 2^305686226 is an apocalyptic number.

305686226 is a deficient number, since it is larger than the sum of its proper divisors (178646062).

305686226 is a wasteful number, since it uses less digits than its factorization.

305686226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114737.

The product of its (nonzero) digits is 103680, while the sum is 38.

The square root of 305686226 is about 17483.8847513932. The cubic root of 305686226 is about 673.6360025954.

The spelling of 305686226 in words is "three hundred five million, six hundred eighty-six thousand, two hundred twenty-six".