2206017780 has 48 divisors (see below), whose sum is σ = 6204098880. Its totient is φ = 585676288.

The previous prime is 2206017773. The next prime is 2206017797. The reversal of 2206017780 is 877106022.

2206017780 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2206017780² = 9733028891352256800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67365 + ... + 94604.

It is an arithmetic number, because the mean of its divisors is an integer number (129252060).

Almost surely, 2^2206017780 is an apocalyptic number.

2206017780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2206017780 is an abundant number, since it is smaller than the sum of its proper divisors (3998081100).

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

2206017780 is a wasteful number, since it uses less digits than its factorization.

2206017780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162208 (or 162206 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 33.

The square root of 2206017780 is about 46968.2635403950. The cubic root of 2206017780 is about 1301.7762268180.

The spelling of 2206017780 in words is "two billion, two hundred six million, seventeen thousand, seven hundred eighty".