20000004220 has 24 divisors (see below), whose sum is σ = 48000010464. Its totient is φ = 6857144256.

The previous prime is 20000004217. The next prime is 20000004239. The reversal of 20000004220 is 2240000002.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 20000004197 and 20000004206.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71428447 + ... + 71428726.

It is an arithmetic number, because the mean of its divisors is an integer number (2000000436).

Almost surely, 2^20000004220 is an apocalyptic number.

20000004220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20000004220 is an abundant number, since it is smaller than the sum of its proper divisors (28000006244).

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

20000004220 is a wasteful number, since it uses less digits than its factorization.

20000004220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142857189 (or 142857187 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 10.

Adding to 20000004220 its reverse (2240000002), we get a palindrome (22240004222).

The spelling of 20000004220 in words is "twenty billion, four thousand, two hundred twenty".