218068782 has 16 divisors (see below), whose sum is σ = 440214912. Its totient is φ = 72010040.

The previous prime is 218068771. The next prime is 218068783. The reversal of 218068782 is 287860812.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (218068783) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 169194 + ... + 170477.

It is an arithmetic number, because the mean of its divisors is an integer number (27513432).

Almost surely, 2^218068782 is an apocalyptic number.

218068782 is an abundant number, since it is smaller than the sum of its proper divisors (222146130).

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

218068782 is a wasteful number, since it uses less digits than its factorization.

218068782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339783.

The product of its (nonzero) digits is 86016, while the sum is 42.

The square root of 218068782 is about 14767.1521289652. The cubic root of 218068782 is about 601.9094557406.

The spelling of 218068782 in words is "two hundred eighteen million, sixty-eight thousand, seven hundred eighty-two".