220171056 has 80 divisors (see below), whose sum is σ = 654910464. Its totient is φ = 62433792.

The previous prime is 220171043. The next prime is 220171057. The reversal of 220171056 is 650171022.

220171056 is digitally balanced in base 2 and base 3, because in such bases 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 (24).

It is not an unprimeable number, because it can be changed into a prime (220171057) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43641 + ... + 48423.

Almost surely, 2^220171056 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 220171056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (327455232).

220171056 is an abundant number, since it is smaller than the sum of its proper divisors (434739408).

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

220171056 is a wasteful number, since it uses less digits than its factorization.

220171056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4938 (or 4932 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 24.

The square root of 220171056 is about 14838.1621503473. The cubic root of 220171056 is about 603.8374926464.

The spelling of 220171056 in words is "two hundred twenty million, one hundred seventy-one thousand, fifty-six".