345228 has 24 divisors (see below), whose sum is σ = 867888. Its totient is φ = 106176.

The previous prime is 345227. The next prime is 345229. The reversal of 345228 is 822543.

It is an interprime number because it is at equal distance from previous prime (345227) and next prime (345229).

It is a d-powerful number, because it can be written as 3³ + 4⁷ + 2¹⁶ + 5⁴ + 2¹⁸ + 8³ .

It is a junction number, because it is equal to n+sod(n) for n = 345198 and 345207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 951 + ... + 1262.

It is an arithmetic number, because the mean of its divisors is an integer number (36162).

2³⁴⁵²²⁸ is an apocalyptic number.

It is an amenable number.

345228 is an abundant number, since it is smaller than the sum of its proper divisors (522660).

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

345228 is a wasteful number, since it uses less digits than its factorization.

345228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2233 (or 2231 counting only the distinct ones).

The product of its digits is 1920, while the sum is 24.

The square root of 345228 is about 587.5610606567. The cubic root of 345228 is about 70.1512376359.

The spelling of 345228 in words is "three hundred forty-five thousand, two hundred twenty-eight".