345216446 has 16 divisors (see below), whose sum is σ = 527004960. Its totient is φ = 169555680.

The previous prime is 345216439. The next prime is 345216449. The reversal of 345216446 is 644612543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345216449) 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, 129095 + ... + 131741.

It is an arithmetic number, because the mean of its divisors is an integer number (32937810).

Almost surely, 2^345216446 is an apocalyptic number.

345216446 is a deficient number, since it is larger than the sum of its proper divisors (181788514).

345216446 is a wasteful number, since it uses less digits than its factorization.

345216446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3779.

The product of its digits is 69120, while the sum is 35.

The square root of 345216446 is about 18580.0012378902. The cubic root of 345216446 is about 701.5045502613.

Adding to 345216446 its reverse (644612543), we get a palindrome (989828989).

The spelling of 345216446 in words is "three hundred forty-five million, two hundred sixteen thousand, four hundred forty-six".