2220622720 has 64 divisors (see below), whose sum is σ = 5588110800. Its totient is φ = 841494528.

The previous prime is 2220622693. The next prime is 2220622751. The reversal of 2220622720 is 272260222.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79149 + ... + 103468.

Almost surely, 2^2220622720 is an apocalyptic number.

2220622720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2220622720 is an abundant number, since it is smaller than the sum of its proper divisors (3367488080).

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

2220622720 is a wasteful number, since it uses less digits than its factorization.

2220622720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182655 (or 182643 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 2220622720 is about 47123.4837421853. The cubic root of 2220622720 is about 1304.6427132663.

Adding to 2220622720 its reverse (272260222), we get a palindrome (2492882942).

The spelling of 2220622720 in words is "two billion, two hundred twenty million, six hundred twenty-two thousand, seven hundred twenty".