345440222 has 4 divisors (see below), whose sum is σ = 518160336. Its totient is φ = 172720110.

The previous prime is 345440171. The next prime is 345440233. The reversal of 345440222 is 222044543.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 345440191 and 345440200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86360054 + ... + 86360057.

It is an arithmetic number, because the mean of its divisors is an integer number (129540084).

Almost surely, 2^345440222 is an apocalyptic number.

345440222 is a deficient number, since it is larger than the sum of its proper divisors (172720114).

345440222 is a wasteful number, since it uses less digits than its factorization.

345440222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172720113.

The product of its (nonzero) digits is 7680, while the sum is 26.

The square root of 345440222 is about 18586.0222210133. The cubic root of 345440222 is about 701.6560938094.

Adding to 345440222 its reverse (222044543), we get a palindrome (567484765).

The spelling of 345440222 in words is "three hundred forty-five million, four hundred forty thousand, two hundred twenty-two".