243835256 has 16 divisors (see below), whose sum is σ = 522504240. Its totient is φ = 104500800.

The previous prime is 243835223. The next prime is 243835261. The reversal of 243835256 is 652538342.

243835256 = 5899² + 5900² + ... + 5905².

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2177045 + ... + 2177156.

It is an arithmetic number, because the mean of its divisors is an integer number (32656515).

Almost surely, 2^243835256 is an apocalyptic number.

It is an amenable number.

243835256 is an abundant number, since it is smaller than the sum of its proper divisors (278668984).

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

243835256 is a wasteful number, since it uses less digits than its factorization.

243835256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4354214 (or 4354210 counting only the distinct ones).

The product of its digits is 172800, while the sum is 38.

The square root of 243835256 is about 15615.2251344641. The cubic root of 243835256 is about 624.7393097334.

The spelling of 243835256 in words is "two hundred forty-three million, eight hundred thirty-five thousand, two hundred fifty-six".