143305228 has 24 divisors (see below), whose sum is σ = 277671744. Its totient is φ = 64165200.

The previous prime is 143305171. The next prime is 143305229. The reversal of 143305228 is 822503341.

It is a junction number, because it is equal to n+sod(n) for n = 143305196 and 143305205.

It is not an unprimeable number, because it can be changed into a prime (143305229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21358 + ... + 27253.

It is an arithmetic number, because the mean of its divisors is an integer number (11569656).

Almost surely, 2^143305228 is an apocalyptic number.

It is an amenable number.

143305228 is a deficient number, since it is larger than the sum of its proper divisors (134366516).

143305228 is a wasteful number, since it uses less digits than its factorization.

143305228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48693 (or 48691 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 143305228 is about 11971.0161640522. The cubic root of 143305228 is about 523.3039482962.

Adding to 143305228 its reverse (822503341), we get a palindrome (965808569).

It can be divided in two parts, 143 and 305228, that added together give a triangular number (305371 = T₇₈₁).

The spelling of 143305228 in words is "one hundred forty-three million, three hundred five thousand, two hundred twenty-eight".