220234420 has 36 divisors (see below), whose sum is σ = 538003620. Its totient is φ = 75508608.

The previous prime is 220234409. The next prime is 220234457. The reversal of 220234420 is 24432022.

It can be written as a sum of positive squares in 2 ways, for example, as 107619876 + 112614544 = 10374^2 + 10612^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 111385 + ... + 113344.

It is an arithmetic number, because the mean of its divisors is an integer number (14944545).

Almost surely, 2^220234420 is an apocalyptic number.

220234420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220234420 is an abundant number, since it is smaller than the sum of its proper divisors (317769200).

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

220234420 is a wasteful number, since it uses less digits than its factorization.

220234420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224752 (or 224743 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 220234420 is about 14840.2971668360. The cubic root of 220234420 is about 603.8954141093.

Adding to 220234420 its reverse (24432022), we get a palindrome (244666442).

The spelling of 220234420 in words is "two hundred twenty million, two hundred thirty-four thousand, four hundred twenty".