220430420 has 36 divisors (see below), whose sum is σ = 538482420. Its totient is φ = 75575808.

The previous prime is 220430407. The next prime is 220430437. The reversal of 220430420 is 24034022.

It can be written as a sum of positive squares in 2 ways, for example, as 96864964 + 123565456 = 9842^2 + 11116^2 .

It is a super-2 number, since 2×220430420² = 97179140122752800, which contains 22 as substring.

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, 111485 + ... + 113444.

It is an arithmetic number, because the mean of its divisors is an integer number (14957845).

Almost surely, 2^220430420 is an apocalyptic number.

220430420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220430420 is an abundant number, since it is smaller than the sum of its proper divisors (318052000).

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

220430420 is a wasteful number, since it uses less digits than its factorization.

220430420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224952 (or 224943 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 220430420 is about 14846.8993395928. The cubic root of 220430420 is about 604.0745087388.

Adding to 220430420 its reverse (24034022), we get a palindrome (244464442).

The spelling of 220430420 in words is "two hundred twenty million, four hundred thirty thousand, four hundred twenty".