243978230 has 16 divisors (see below), whose sum is σ = 439450704. Its totient is φ = 97526880.

The previous prime is 243978211. The next prime is 243978233. The reversal of 243978230 is 32879342.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243978233) 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, 9725 + ... + 24135.

It is an arithmetic number, because the mean of its divisors is an integer number (27465669).

Almost surely, 2^243978230 is an apocalyptic number.

243978230 is a deficient number, since it is larger than the sum of its proper divisors (195472474).

243978230 is a wasteful number, since it uses less digits than its factorization.

243978230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16111.

The product of its (nonzero) digits is 72576, while the sum is 38.

The square root of 243978230 is about 15619.8024955503. The cubic root of 243978230 is about 624.8613921962.

The spelling of 243978230 in words is "two hundred forty-three million, nine hundred seventy-eight thousand, two hundred thirty".