2218622240 has 24 divisors (see below), whose sum is σ = 5241495420. Its totient is φ = 887448832.

The previous prime is 2218622227. The next prime is 2218622321. The reversal of 2218622240 is 422268122.

It can be written as a sum of positive squares in 2 ways, for example, as 2215396624 + 3225616 = 47068^2 + 1796^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6933035 + ... + 6933354.

Almost surely, 2^2218622240 is an apocalyptic number.

2218622240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2218622240 is an abundant number, since it is smaller than the sum of its proper divisors (3022873180).

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

2218622240 is a wasteful number, since it uses less digits than its factorization.

2218622240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13866404 (or 13866396 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 29.

The square root of 2218622240 is about 47102.2530246696. The cubic root of 2218622240 is about 1304.2508268299.

The spelling of 2218622240 in words is "two billion, two hundred eighteen million, six hundred twenty-two thousand, two hundred forty".