220220388 has 36 divisors (see below), whose sum is σ = 557902800. Its totient is φ = 73244016.

The previous prime is 220220383. The next prime is 220220419. The reversal of 220220388 is 883022022.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (220220381) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10263 + ... + 23361.

It is an arithmetic number, because the mean of its divisors is an integer number (15497300).

Almost surely, 2^220220388 is an apocalyptic number.

It is an amenable number.

220220388 is an abundant number, since it is smaller than the sum of its proper divisors (337682412).

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

220220388 is a wasteful number, since it uses less digits than its factorization.

220220388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13576 (or 13571 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 220220388 is about 14839.8243924920. The cubic root of 220220388 is about 603.8825883206.

The spelling of 220220388 in words is "two hundred twenty million, two hundred twenty thousand, three hundred eighty-eight".