243255276 has 72 divisors (see below), whose sum is σ = 672619584. Its totient is φ = 73513440.

The previous prime is 243255269. The next prime is 243255281. The reversal of 243255276 is 672552342.

243255276 is a `hidden beast` number, since 2 + 4 + 32 + 552 + 76 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 243255276.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 216051 + ... + 217173.

Almost surely, 2^243255276 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 243255276, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (336309792).

243255276 is an abundant number, since it is smaller than the sum of its proper divisors (429364308).

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

243255276 is a wasteful number, since it uses less digits than its factorization.

243255276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1691 (or 1686 counting only the distinct ones).

The product of its digits is 100800, while the sum is 36.

The square root of 243255276 is about 15596.6431003598. The cubic root of 243255276 is about 624.2435870992.

The spelling of 243255276 in words is "two hundred forty-three million, two hundred fifty-five thousand, two hundred seventy-six".