243261956 has 24 divisors (see below), whose sum is σ = 494773440. Its totient is φ = 102487392.

The previous prime is 243261943. The next prime is 243261971. The reversal of 243261956 is 659162342.

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, 71975 + ... + 75278.

It is an arithmetic number, because the mean of its divisors is an integer number (20615560).

Almost surely, 2^243261956 is an apocalyptic number.

It is an amenable number.

243261956 is an abundant number, since it is smaller than the sum of its proper divisors (251511484).

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

243261956 is a wasteful number, since it uses less digits than its factorization.

243261956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147323 (or 147321 counting only the distinct ones).

The product of its digits is 77760, while the sum is 38.

The square root of 243261956 is about 15596.8572475355. The cubic root of 243261956 is about 624.2493011363.

The spelling of 243261956 in words is "two hundred forty-three million, two hundred sixty-one thousand, nine hundred fifty-six".