243028 has 6 divisors (see below), whose sum is σ = 425306. Its totient is φ = 121512.
The previous prime is 243011. The next prime is 243031. The reversal of 243028 is 820342.
It is a happy number.
It can be written as a sum of positive squares in only one way, i.e., 213444 + 29584 = 462^2 + 172^2 .
It is a junction number, because it is equal to n+sod(n) for n = 242996 and 243014.
It is a congruent number.
It is an unprimeable number.
243028 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 as a sum of consecutive naturals, namely, 30375 + ... + 30382.
2243028 is an apocalyptic number.
It is an amenable number.
243028 is a deficient number, since it is larger than the sum of its proper divisors (182278).
243028 is a wasteful number, since it uses less digits than its factorization.
243028 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 60761 (or 60759 counting only the distinct ones).
The product of its (nonzero) digits is 384, while the sum is 19.
The square root of 243028 is about 492.9787013655. The cubic root of 243028 is about 62.4049114039.
It can be divided in two parts, 24302 and 8, that added together give a triangular number (24310 = T220).
The spelling of 243028 in words is "two hundred forty-three thousand, twenty-eight".
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