243224856 has 240 divisors, whose sum is σ = 824590800. Its totient is φ = 65536128.

The previous prime is 243224843. The next prime is 243224879. The reversal of 243224856 is 658422342.

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 243224856.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 5656371 + ... + 5656413.

It is an arithmetic number, because the mean of its divisors is an integer number (3435795).

Almost surely, 2^243224856 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 243224856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (412295400).

243224856 is an abundant number, since it is smaller than the sum of its proper divisors (581365944).

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

243224856 is a wasteful number, since it uses less digits than its factorization.

243224856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140 (or 84 counting only the distinct ones).

The product of its digits is 92160, while the sum is 36.

The square root of 243224856 is about 15595.6678600181. The cubic root of 243224856 is about 624.2175646673.

The spelling of 243224856 in words is "two hundred forty-three million, two hundred twenty-four thousand, eight hundred fifty-six".