2218340072 has 32 divisors (see below), whose sum is σ = 4583520480. Its totient is φ = 1000036800.

The previous prime is 2218340071. The next prime is 2218340083. The reversal of 2218340072 is 2700438122.

It is not an unprimeable number, because it can be changed into a prime (2218340071) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 243554 + ... + 252497.

It is an arithmetic number, because the mean of its divisors is an integer number (143235015).

Almost surely, 2^2218340072 is an apocalyptic number.

It is an amenable number.

2218340072 is an abundant number, since it is smaller than the sum of its proper divisors (2365180408).

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

2218340072 is a wasteful number, since it uses less digits than its factorization.

2218340072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 496113 (or 496109 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 2218340072 is about 47099.2576586935. The cubic root of 2218340072 is about 1304.1955322356.

Adding to 2218340072 its reverse (2700438122), we get a palindrome (4918778194).

The spelling of 2218340072 in words is "two billion, two hundred eighteen million, three hundred forty thousand, seventy-two".