218000252 has 12 divisors (see below), whose sum is σ = 381818976. Its totient is φ = 108909120.

The previous prime is 218000227. The next prime is 218000267. The reversal of 218000252 is 252000812.

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 3 ways as a sum of consecutive naturals, for example, 17213 + ... + 27060.

It is an arithmetic number, because the mean of its divisors is an integer number (31818248).

Almost surely, 2^218000252 is an apocalyptic number.

It is an amenable number.

218000252 is a deficient number, since it is larger than the sum of its proper divisors (163818724).

218000252 is a wasteful number, since it uses less digits than its factorization.

218000252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45508 (or 45506 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 218000252 is about 14764.8315940277. The cubic root of 218000252 is about 601.8463973846.

The spelling of 218000252 in words is "two hundred eighteen million, two hundred fifty-two", and thus it is an aban number.