243655146 has 72 divisors (see below), whose sum is σ = 640864224. Its totient is φ = 66583440.

The previous prime is 243655121. The next prime is 243655193. The reversal of 243655146 is 641556342.

It is a self number, because there is not a number n which added to its sum of digits gives 243655146.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 14281 + ... + 26291.

It is an arithmetic number, because the mean of its divisors is an integer number (8900892).

Almost surely, 2^243655146 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 243655146, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (320432112).

243655146 is an abundant number, since it is smaller than the sum of its proper divisors (397209078).

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

243655146 is a wasteful number, since it uses less digits than its factorization.

243655146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12056 (or 12046 counting only the distinct ones).

The product of its digits is 86400, while the sum is 36.

The square root of 243655146 is about 15609.4569412264. The cubic root of 243655146 is about 624.5854496843.

The spelling of 243655146 in words is "two hundred forty-three million, six hundred fifty-five thousand, one hundred forty-six".