7218252 has 72 divisors (see below), whose sum is σ = 19634160. Its totient is φ = 2229120.

The previous prime is 7218247. The next prime is 7218259. The reversal of 7218252 is 2528127.

7218252 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (7218259) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41638 + ... + 41810.

Almost surely, 2^7218252 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7218252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9817080).

7218252 is an abundant number, since it is smaller than the sum of its proper divisors (12415908).

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

7218252 is a wasteful number, since it uses less digits than its factorization.

7218252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263 (or 258 counting only the distinct ones).

The product of its digits is 2240, while the sum is 27.

The square root of 7218252 is about 2686.6804796998. The cubic root of 7218252 is about 193.2609069443.

The spelling of 7218252 in words is "seven million, two hundred eighteen thousand, two hundred fifty-two".