345305238 has 16 divisors (see below), whose sum is σ = 709276080. Its totient is φ = 111990816.

The previous prime is 345305209. The next prime is 345305251. The reversal of 345305238 is 832503543.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 345305199 and 345305208.

It is a congruent number.

It is an unprimeable number.

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, 777493 + ... + 777936.

It is an arithmetic number, because the mean of its divisors is an integer number (44329755).

Almost surely, 2^345305238 is an apocalyptic number.

345305238 is an abundant number, since it is smaller than the sum of its proper divisors (363970842).

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

345305238 is a wasteful number, since it uses less digits than its factorization.

345305238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1555471.

The product of its (nonzero) digits is 43200, while the sum is 33.

The square root of 345305238 is about 18582.3905351276. The cubic root of 345305238 is about 701.5646890073.

It can be divided in two parts, 345305 and 238, that added together give a palindrome (345543).

The spelling of 345305238 in words is "three hundred forty-five million, three hundred five thousand, two hundred thirty-eight".