243884956 has 36 divisors (see below), whose sum is σ = 498200976. Its totient is φ = 104160000.

The previous prime is 243884951. The next prime is 243884989. The reversal of 243884956 is 659488342.

243884956 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243884951) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 58956 + ... + 62956.

It is an arithmetic number, because the mean of its divisors is an integer number (13838916).

Almost surely, 2^243884956 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 243884956, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (249100488).

243884956 is an abundant number, since it is smaller than the sum of its proper divisors (254316020).

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

243884956 is a wasteful number, since it uses less digits than its factorization.

243884956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4330 (or 4321 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 49.

The square root of 243884956 is about 15616.8164489437. The cubic root of 243884956 is about 624.7817529180.

The spelling of 243884956 in words is "two hundred forty-three million, eight hundred eighty-four thousand, nine hundred fifty-six".