7218224340 has 24 divisors (see below), whose sum is σ = 20211028320. Its totient is φ = 1924859808.

The previous prime is 7218224333. The next prime is 7218224383. The reversal of 7218224340 is 434228127.

It is a happy number.

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, 60151810 + ... + 60151929.

It is an arithmetic number, because the mean of its divisors is an integer number (842126180).

Almost surely, 2^7218224340 is an apocalyptic number.

It is an amenable number.

7218224340 is an abundant number, since it is smaller than the sum of its proper divisors (12992803980).

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

7218224340 is a wasteful number, since it uses less digits than its factorization.

7218224340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120303751 (or 120303749 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 33.

The square root of 7218224340 is about 84960.1338275782. The cubic root of 7218224340 is about 1932.6066008840.

The spelling of 7218224340 in words is "seven billion, two hundred eighteen million, two hundred twenty-four thousand, three hundred forty".