305120106 has 24 divisors (see below), whose sum is σ = 661978980. Its totient is φ = 101570496.

The previous prime is 305120087. The next prime is 305120111. The reversal of 305120106 is 601021503.

It can be written as a sum of positive squares in 2 ways, for example, as 302446881 + 2673225 = 17391^2 + 1635^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2950 + ... + 24878.

Almost surely, 2^305120106 is an apocalyptic number.

305120106 is an abundant number, since it is smaller than the sum of its proper divisors (356858874).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

305120106 is a wasteful number, since it uses less digits than its factorization.

305120106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22710 (or 22707 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 305120106 is about 17467.6874828925. The cubic root of 305120106 is about 673.2198956587.

Adding to 305120106 its reverse (601021503), we get a palindrome (906141609).

The spelling of 305120106 in words is "three hundred five million, one hundred twenty thousand, one hundred six".