220004420 has 24 divisors (see below), whose sum is σ = 486326400. Its totient is φ = 83369952.

The previous prime is 220004399. The next prime is 220004459. The reversal of 220004420 is 24400022.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 220004395 and 220004404.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 289100 + ... + 289859.

It is an arithmetic number, because the mean of its divisors is an integer number (20263600).

Almost surely, 2^220004420 is an apocalyptic number.

220004420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220004420 is an abundant number, since it is smaller than the sum of its proper divisors (266321980).

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

220004420 is a wasteful number, since it uses less digits than its factorization.

220004420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 578987 (or 578985 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 14.

The square root of 220004420 is about 14832.5459716126. The cubic root of 220004420 is about 603.6851164866.

Adding to 220004420 its reverse (24400022), we get a palindrome (244404442).

The spelling of 220004420 in words is "two hundred twenty million, four thousand, four hundred twenty".