2206688220 has 72 divisors (see below), whose sum is σ = 7302138480. Its totient is φ = 534954240.

The previous prime is 2206688203. The next prime is 2206688227. The reversal of 2206688220 is 228866022.

2206688220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2206688227) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 555265 + ... + 559224.

It is an arithmetic number, because the mean of its divisors is an integer number (101418590).

Almost surely, 2^2206688220 is an apocalyptic number.

2206688220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2206688220 is an abundant number, since it is smaller than the sum of its proper divisors (5095450260).

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

2206688220 is a wasteful number, since it uses less digits than its factorization.

2206688220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1114515 (or 1114510 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 36.

The square root of 2206688220 is about 46975.4001579550. The cubic root of 2206688220 is about 1301.9080895288.

The spelling of 2206688220 in words is "two billion, two hundred six million, six hundred eighty-eight thousand, two hundred twenty".