345256818 has 64 divisors (see below), whose sum is σ = 745113600. Its totient is φ = 106381440.

The previous prime is 345256817. The next prime is 345256823. The reversal of 345256818 is 818652543.

It is a self number, because there is not a number n which added to its sum of digits gives 345256818.

It is not an unprimeable number, because it can be changed into a prime (345256817) 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 31 ways as a sum of consecutive naturals, for example, 786243 + ... + 786681.

It is an arithmetic number, because the mean of its divisors is an integer number (11642400).

Almost surely, 2^345256818 is an apocalyptic number.

345256818 is an abundant number, since it is smaller than the sum of its proper divisors (399856782).

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

345256818 is a wasteful number, since it uses less digits than its factorization.

345256818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 647.

The product of its digits is 230400, while the sum is 42.

The square root of 345256818 is about 18581.0876430848. The cubic root of 345256818 is about 701.5318954608.

The spelling of 345256818 in words is "three hundred forty-five million, two hundred fifty-six thousand, eight hundred eighteen".