308205226 has 32 divisors (see below), whose sum is σ = 547725312. Its totient is φ = 127329840.

The previous prime is 308205217. The next prime is 308205253. The reversal of 308205226 is 622502803.

It is a super-2 number, since 2×308205226² = 189980922667422152, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 308205194 and 308205203.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40591 + ... + 47581.

It is an arithmetic number, because the mean of its divisors is an integer number (17116416).

Almost surely, 2^308205226 is an apocalyptic number.

308205226 is a deficient number, since it is larger than the sum of its proper divisors (239520086).

308205226 is a wasteful number, since it uses less digits than its factorization.

308205226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7114.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 308205226 is about 17555.7747194477. The cubic root of 308205226 is about 675.4813035508.

It can be divided in two parts, 30820 and 5226, that added together give a triangular number (36046 = T₂₆₈).

The spelling of 308205226 in words is "three hundred eight million, two hundred five thousand, two hundred twenty-six".