2200055640 has 32 divisors (see below), whose sum is σ = 6600167280. Its totient is φ = 586681472.

The previous prime is 2200055633. The next prime is 2200055687. The reversal of 2200055640 is 465500022.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 2200055640.

It is a congruent number.

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, 9166779 + ... + 9167018.

Almost surely, 2^2200055640 is an apocalyptic number.

2200055640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2200055640 is an abundant number, since it is smaller than the sum of its proper divisors (4400111640).

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

2200055640 is a wasteful number, since it uses less digits than its factorization.

2200055640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18333811 (or 18333807 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 2200055640 is about 46904.7507188771. The cubic root of 2200055640 is about 1300.6024111390.

Adding to 2200055640 its reverse (465500022), we get a palindrome (2665555662).

The spelling of 2200055640 in words is "two billion, two hundred million, fifty-five thousand, six hundred forty".