2206115720 has 16 divisors (see below), whose sum is σ = 4963760460. Its totient is φ = 882446272.

The previous prime is 2206115719. The next prime is 2206115761. The reversal of 2206115720 is 275116022.

2206115720 is digitally balanced in base 2, 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 2180329636 + 25786084 = 46694^2 + 5078^2 .

It is a super-2 number, since 2×2206115720² = 9733893140062236800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2206115720.

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, 27576407 + ... + 27576486.

Almost surely, 2^2206115720 is an apocalyptic number.

2206115720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2206115720 is an abundant number, since it is smaller than the sum of its proper divisors (2757644740).

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

2206115720 is a wasteful number, since it uses less digits than its factorization.

2206115720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55152904 (or 55152900 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 2206115720 is about 46969.3061477387. The cubic root of 2206115720 is about 1301.7954914069.

The spelling of 2206115720 in words is "two billion, two hundred six million, one hundred fifteen thousand, seven hundred twenty".