220640214 has 32 divisors (see below), whose sum is σ = 447842304. Its totient is φ = 72460800.

The previous prime is 220640201. The next prime is 220640279. The reversal of 220640214 is 412046022.

It is a Curzon number.

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, 137014 + ... + 138614.

It is an arithmetic number, because the mean of its divisors is an integer number (13995072).

Almost surely, 2^220640214 is an apocalyptic number.

220640214 is an abundant number, since it is smaller than the sum of its proper divisors (227202090).

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

220640214 is a wasteful number, since it uses less digits than its factorization.

220640214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1932.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 220640214 is about 14853.9629055683. The cubic root of 220640214 is about 604.2660900148.

Adding to 220640214 its reverse (412046022), we get a palindrome (632686236).

The spelling of 220640214 in words is "two hundred twenty million, six hundred forty thousand, two hundred fourteen".