20440200220 has 48 divisors (see below), whose sum is σ = 47290322016. Its totient is φ = 7359200000.

The previous prime is 20440200217. The next prime is 20440200233. The reversal of 20440200220 is 2200204402.

It is a junction number, because it is equal to n+sod(n) for n = 20440200194 and 20440200203.

It is a congruent number.

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, 437731 + ... + 482170.

It is an arithmetic number, because the mean of its divisors is an integer number (985215042).

Almost surely, 2^20440200220 is an apocalyptic number.

20440200220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20440200220 is an abundant number, since it is smaller than the sum of its proper divisors (26850121796).

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

20440200220 is a wasteful number, since it uses less digits than its factorization.

20440200220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 920022 (or 920020 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 16.

Adding to 20440200220 its reverse (2200204402), we get a palindrome (22640404622).

The spelling of 20440200220 in words is "twenty billion, four hundred forty million, two hundred thousand, two hundred twenty".