305772226 has 16 divisors (see below), whose sum is σ = 469839744. Its totient is φ = 149166864.

The previous prime is 305772223. The next prime is 305772239. The reversal of 305772226 is 622277503.

It is a junction number, because it is equal to n+sod(n) for n = 305772191 and 305772200.

It is not an unprimeable number, because it can be changed into a prime (305772223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123735 + ... + 126181.

It is an arithmetic number, because the mean of its divisors is an integer number (29364984).

Almost surely, 2^305772226 is an apocalyptic number.

305772226 is a deficient number, since it is larger than the sum of its proper divisors (164067518).

305772226 is a wasteful number, since it uses less digits than its factorization.

305772226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3945.

The product of its (nonzero) digits is 35280, while the sum is 34.

The square root of 305772226 is about 17486.3439860938. The cubic root of 305772226 is about 673.6991689616.

The spelling of 305772226 in words is "three hundred five million, seven hundred seventy-two thousand, two hundred twenty-six".