345444 has 24 divisors (see below), whose sum is σ = 879648. Its totient is φ = 104640.

The previous prime is 345431. The next prime is 345451. The reversal of 345444 is 444543.

345444 = T₂₉ + T₃₀ + ... + T₁₂₇.

It is an unprimeable number.

345444 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1177 + ... + 1440.

It is an arithmetic number, because the mean of its divisors is an integer number (36652).

2³⁴⁵⁴⁴⁴ is an apocalyptic number.

It is an amenable number.

345444 is an abundant number, since it is smaller than the sum of its proper divisors (534204).

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

345444 is a wasteful number, since it uses less digits than its factorization.

345444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2635 (or 2633 counting only the distinct ones).

The product of its digits is 3840, while the sum is 24.

The square root of 345444 is about 587.7448425975. The cubic root of 345444 is about 70.1658651750.

Adding to 345444 its reverse (444543), we get a palindrome (789987).

Subtracting 345444 from its reverse (444543), we obtain a palindrome (99099).

The spelling of 345444 in words is "three hundred forty-five thousand, four hundred forty-four".