220538670 has 64 divisors (see below), whose sum is σ = 580898304. Its totient is φ = 53141120.

The previous prime is 220538641. The next prime is 220538683. The reversal of 220538670 is 76835022.

220538670 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 (33).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 55159 + ... + 59021.

It is an arithmetic number, because the mean of its divisors is an integer number (9076536).

Almost surely, 2^220538670 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 220538670, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (290449152).

220538670 is an abundant number, since it is smaller than the sum of its proper divisors (360359634).

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

220538670 is a wasteful number, since it uses less digits than its factorization.

220538670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4057.

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 220538670 is about 14850.5444344643. The cubic root of 220538670 is about 604.1733764666.

The spelling of 220538670 in words is "two hundred twenty million, five hundred thirty-eight thousand, six hundred seventy".