218036826 has 128 divisors (see below), whose sum is σ = 597196800. Its totient is φ = 57594240.

The previous prime is 218036821. The next prime is 218036831. The reversal of 218036826 is 628630812.

It is an interprime number because it is at equal distance from previous prime (218036821) and next prime (218036831).

It is not an unprimeable number, because it can be changed into a prime (218036821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 269110 + ... + 269918.

It is an arithmetic number, because the mean of its divisors is an integer number (4665600).

Almost surely, 2^218036826 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 218036826, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (298598400).

218036826 is an abundant number, since it is smaller than the sum of its proper divisors (379159974).

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

218036826 is a wasteful number, since it uses less digits than its factorization.

218036826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 881 (or 875 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 218036826 is about 14766.0700932916. The cubic root of 218036826 is about 601.8800528491.

The spelling of 218036826 in words is "two hundred eighteen million, thirty-six thousand, eight hundred twenty-six".