220128814 has 16 divisors (see below), whose sum is σ = 344881152. Its totient is φ = 105177688.

The previous prime is 220128803. The next prime is 220128817. The reversal of 220128814 is 418821022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220128817) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71307 + ... + 74329.

It is an arithmetic number, because the mean of its divisors is an integer number (21555072).

Almost surely, 2^220128814 is an apocalyptic number.

220128814 is a deficient number, since it is larger than the sum of its proper divisors (124752338).

220128814 is a wasteful number, since it uses less digits than its factorization.

220128814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4631.

The product of its (nonzero) digits is 2048, while the sum is 28.

The square root of 220128814 is about 14836.7386578048. The cubic root of 220128814 is about 603.7988727731.

Adding to 220128814 its reverse (418821022), we get a palindrome (638949836).

The spelling of 220128814 in words is "two hundred twenty million, one hundred twenty-eight thousand, eight hundred fourteen".