218019252 has 36 divisors (see below), whose sum is σ = 559166048. Its totient is φ = 66066000.

The previous prime is 218019247. The next prime is 218019257. The reversal of 218019252 is 252910812.

It is an interprime number because it is at equal distance from previous prime (218019247) and next prime (218019257).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (218019257) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 73624 + ... + 76527.

Almost surely, 2^218019252 is an apocalyptic number.

218019252 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

218019252 is an abundant number, since it is smaller than the sum of its proper divisors (341146796).

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

218019252 is a wasteful number, since it uses less digits than its factorization.

218019252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150180 (or 150167 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 30.

The square root of 218019252 is about 14765.4750008254. The cubic root of 218019252 is about 601.8638816906.

The spelling of 218019252 in words is "two hundred eighteen million, nineteen thousand, two hundred fifty-two".