2218727280 has 640 divisors, whose sum is σ = 9256550400. Its totient is φ = 425779200.

The previous prime is 2218727279. The next prime is 2218727281. The reversal of 2218727280 is 827278122.

It is an interprime number because it is at equal distance from previous prime (2218727279) and next prime (2218727281).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2218727281) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 24929476 + ... + 24929564.

It is an arithmetic number, because the mean of its divisors is an integer number (14463360).

Almost surely, 2^2218727280 is an apocalyptic number.

2218727280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2218727280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4628275200).

2218727280 is an abundant number, since it is smaller than the sum of its proper divisors (7037823120).

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

2218727280 is a wasteful number, since it uses less digits than its factorization.

2218727280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213 (or 207 counting only the distinct ones).

The product of its (nonzero) digits is 50176, while the sum is 39.

The square root of 2218727280 is about 47103.3680324454. The cubic root of 2218727280 is about 1304.2714096256.

The spelling of 2218727280 in words is "two billion, two hundred eighteen million, seven hundred twenty-seven thousand, two hundred eighty".