2018420240 has 20 divisors (see below), whose sum is σ = 4692827244. Its totient is φ = 807368064.

The previous prime is 2018420219. The next prime is 2018420273. The reversal of 2018420240 is 420248102.

It is a happy number.

2018420240 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1153825024 + 864595216 = 33968^2 + 29404^2 .

It is a tau number, because it is divible by the number of its divisors (20).

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 3 ways as a sum of consecutive naturals, for example, 12615047 + ... + 12615206.

Almost surely, 2^2018420240 is an apocalyptic number.

2018420240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2018420240 is an abundant number, since it is smaller than the sum of its proper divisors (2674407004).

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

2018420240 is a wasteful number, since it uses less digits than its factorization.

2018420240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25230266 (or 25230260 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 23.

The square root of 2018420240 is about 44926.8320717141. The cubic root of 2018420240 is about 1263.7772433659. Note that the first 3 decimals are identical.

Adding to 2018420240 its reverse (420248102), we get a palindrome (2438668342).

The spelling of 2018420240 in words is "two billion, eighteen million, four hundred twenty thousand, two hundred forty".