218052536 has 32 divisors (see below), whose sum is σ = 444679200. Its totient is φ = 99638400.

The previous prime is 218052517. The next prime is 218052551. The reversal of 218052536 is 635250812.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 125 + ... + 20883.

It is an arithmetic number, because the mean of its divisors is an integer number (13896225).

Almost surely, 2^218052536 is an apocalyptic number.

218052536 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 218052536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (222339600).

218052536 is an abundant number, since it is smaller than the sum of its proper divisors (226626664).

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

218052536 is a wasteful number, since it uses less digits than its factorization.

218052536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20879 (or 20875 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 218052536 is about 14766.6020465102. The cubic root of 218052536 is about 601.8945080656.

The spelling of 218052536 in words is "two hundred eighteen million, fifty-two thousand, five hundred thirty-six".