243889152 has 176 divisors, whose sum is σ = 726308352. Its totient is φ = 72253440.

The previous prime is 243889147. The next prime is 243889169. The reversal of 243889152 is 251988342.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1237918 + ... + 1238114.

It is an arithmetic number, because the mean of its divisors is an integer number (4126752).

Almost surely, 2^243889152 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 243889152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (363154176).

243889152 is an abundant number, since it is smaller than the sum of its proper divisors (482419200).

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

243889152 is a wasteful number, since it uses less digits than its factorization.

243889152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264 (or 246 counting only the distinct ones).

The product of its digits is 138240, while the sum is 42.

The square root of 243889152 is about 15616.9507907274. The cubic root of 243889152 is about 624.7853359861.

The spelling of 243889152 in words is "two hundred forty-three million, eight hundred eighty-nine thousand, one hundred fifty-two".