7218882 has 40 divisors (see below), whose sum is σ = 17650512. Its totient is φ = 2187000.

The previous prime is 7218859. The next prime is 7218889. The reversal of 7218882 is 2888127.

It is a super-2 number, since 2×7218882² = 104224514659848, which contains 22 as substring.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (7218889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 244 + ... + 3807.

Almost surely, 2^7218882 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7218882, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8825256).

7218882 is an abundant number, since it is smaller than the sum of its proper divisors (10431630).

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

7218882 is a wasteful number, since it uses less digits than its factorization.

7218882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4076 (or 4067 counting only the distinct ones).

The product of its digits is 14336, while the sum is 36.

The square root of 7218882 is about 2686.7977221964. The cubic root of 7218882 is about 193.2665293040.

It can be divided in two parts, 7218 and 882, that added together give a square (8100 = 90²).

The spelling of 7218882 in words is "seven million, two hundred eighteen thousand, eight hundred eighty-two".