345443144 has 8 divisors (see below), whose sum is σ = 647705910. Its totient is φ = 172721568.

The previous prime is 345443143. The next prime is 345443159. The reversal of 345443144 is 441344543.

It can be written as a sum of positive squares in only one way, i.e., 258244900 + 87198244 = 16070^2 + 9338^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 345443144.

It is not an unprimeable number, because it can be changed into a prime (345443143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21590189 + ... + 21590204.

Almost surely, 2^345443144 is an apocalyptic number.

It is an amenable number.

345443144 is a deficient number, since it is larger than the sum of its proper divisors (302262766).

345443144 is a wasteful number, since it uses less digits than its factorization.

345443144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43180399 (or 43180395 counting only the distinct ones).

The product of its digits is 46080, while the sum is 32.

The square root of 345443144 is about 18586.1008283072. The cubic root of 345443144 is about 701.6580721868.

Adding to 345443144 its reverse (441344543), we get a palindrome (786787687).

The spelling of 345443144 in words is "three hundred forty-five million, four hundred forty-three thousand, one hundred forty-four".