145228 has 6 divisors (see below), whose sum is σ = 254156. Its totient is φ = 72612.

The previous prime is 145219. The next prime is 145253. The reversal of 145228 is 822541.

145228 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 145199 and 145208.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18150 + ... + 18157.

2¹⁴⁵²²⁸ is an apocalyptic number.

It is an amenable number.

145228 is a deficient number, since it is larger than the sum of its proper divisors (108928).

145228 is a wasteful number, since it uses less digits than its factorization.

145228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36311 (or 36309 counting only the distinct ones).

The product of its digits is 640, while the sum is 22.

The square root of 145228 is about 381.0879163658. The cubic root of 145228 is about 52.5634003516.

Adding to 145228 its reverse (822541), we get a palindrome (967769).

It can be divided in two parts, 145 and 228, that added together give a palindrome (373).

The spelling of 145228 in words is "one hundred forty-five thousand, two hundred twenty-eight".