20303400220 has 36 divisors (see below), whose sum is σ = 45292753800. Its totient is φ = 7643630848.

The previous prime is 20303400217. The next prime is 20303400223. The reversal of 20303400220 is 2200430302.

It is an interprime number because it is at equal distance from previous prime (20303400217) and next prime (20303400223).

It is a junction number, because it is equal to n+sod(n) for n = 20303400194 and 20303400203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20303400223) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 1750570 + ... + 1762129.

It is an arithmetic number, because the mean of its divisors is an integer number (1258132050).

Almost surely, 2^20303400220 is an apocalyptic number.

20303400220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20303400220 is an abundant number, since it is smaller than the sum of its proper divisors (24989353580).

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

20303400220 is a wasteful number, since it uses less digits than its factorization.

20303400220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3512742 (or 3512723 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 16.

Adding to 20303400220 its reverse (2200430302), we get a palindrome (22503830522).

The spelling of 20303400220 in words is "twenty billion, three hundred three million, four hundred thousand, two hundred twenty".