2218020040 has 32 divisors (see below), whose sum is σ = 5075136000. Its totient is φ = 872169664.

The previous prime is 2218020017. The next prime is 2218020061. The reversal of 2218020040 is 400208122.

It is a super-2 number, since 2×2218020040² = 9839225795683203200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 467560 + ... + 472279.

It is an arithmetic number, because the mean of its divisors is an integer number (158598000).

Almost surely, 2^2218020040 is an apocalyptic number.

2218020040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2218020040 is an abundant number, since it is smaller than the sum of its proper divisors (2857115960).

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

2218020040 is a wasteful number, since it uses less digits than its factorization.

2218020040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 939909 (or 939905 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 2218020040 is about 47095.8601153010. The cubic root of 2218020040 is about 1304.1328120087.

Adding to 2218020040 its reverse (400208122), we get a palindrome (2618228162).

The spelling of 2218020040 in words is "two billion, two hundred eighteen million, twenty thousand, forty".