243023228 has 24 divisors (see below), whose sum is σ = 514638432. Its totient is φ = 98025984.

The previous prime is 243023213. The next prime is 243023251. The reversal of 243023228 is 822320342.

It is a junction number, because it is equal to n+sod(n) for n = 243023197 and 243023206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 254801 + ... + 255752.

It is an arithmetic number, because the mean of its divisors is an integer number (21443268).

Almost surely, 2^243023228 is an apocalyptic number.

243023228 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

243023228 is an abundant number, since it is smaller than the sum of its proper divisors (271615204).

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

243023228 is a wasteful number, since it uses less digits than its factorization.

243023228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510581 (or 510579 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 243023228 is about 15589.2022887638. The cubic root of 243023228 is about 624.0450294866.

The spelling of 243023228 in words is "two hundred forty-three million, twenty-three thousand, two hundred twenty-eight".