220420004420 has 48 divisors (see below), whose sum is σ = 577099651968. Its totient is φ = 68702338560.

The previous prime is 220420004393. The next prime is 220420004443. The reversal of 220420004420 is 24400024022.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 220420004392 and 220420004401.

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, 71563397 + ... + 71566476.

It is an arithmetic number, because the mean of its divisors is an integer number (12022909416).

Almost surely, 2^220420004420 is an apocalyptic number.

220420004420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220420004420 is an abundant number, since it is smaller than the sum of its proper divisors (356679647548).

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

220420004420 is a wasteful number, since it uses less digits than its factorization.

220420004420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143129900 (or 143129898 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

Adding to 220420004420 its reverse (24400024022), we get a palindrome (244820028442).

The spelling of 220420004420 in words is "two hundred twenty billion, four hundred twenty million, four thousand, four hundred twenty".