243960012 has 60 divisors (see below), whose sum is σ = 642466440. Its totient is φ = 80720064.

The previous prime is 243960001. The next prime is 243960053. The reversal of 243960012 is 210069342.

243960012 is a `hidden beast` number, since 2 + 43 + 9 + 600 + 12 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 42328 + ... + 47744.

It is an arithmetic number, because the mean of its divisors is an integer number (10707774).

Almost surely, 2^243960012 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 243960012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (321233220).

243960012 is an abundant number, since it is smaller than the sum of its proper divisors (398506428).

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

243960012 is a wasteful number, since it uses less digits than its factorization.

243960012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5572 (or 5561 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 243960012 is about 15619.2193146777. The cubic root of 243960012 is about 624.8458388848.

The spelling of 243960012 in words is "two hundred forty-three million, nine hundred sixty thousand, twelve".