2218757280 has 48 divisors (see below), whose sum is σ = 6989086944. Its totient is φ = 591668480.

The previous prime is 2218757279. The next prime is 2218757291. The reversal of 2218757280 is 827578122.

It is a tau number, because it is divible by the number of its divisors (48).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2310726 + ... + 2311685.

It is an arithmetic number, because the mean of its divisors is an integer number (145605978).

Almost surely, 2^2218757280 is an apocalyptic number.

2218757280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2218757280 is an abundant number, since it is smaller than the sum of its proper divisors (4770329664).

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

2218757280 is a wasteful number, since it uses less digits than its factorization.

2218757280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4622429 (or 4622421 counting only the distinct ones).

The product of its (nonzero) digits is 125440, while the sum is 42.

The square root of 2218757280 is about 47103.6864799349. The cubic root of 2218757280 is about 1304.2772880656.

The spelling of 2218757280 in words is "two billion, two hundred eighteen million, seven hundred fifty-seven thousand, two hundred eighty".