20344102220 has 24 divisors (see below), whose sum is σ = 46008970224. Its totient is φ = 7511668416.

The previous prime is 20344102193. The next prime is 20344102223. The reversal of 20344102220 is 2220144302.

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 = 20344102192 and 20344102201.

It is not an unprimeable number, because it can be changed into a prime (20344102223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39123014 + ... + 39123533.

It is an arithmetic number, because the mean of its divisors is an integer number (1917040426).

Almost surely, 2^20344102220 is an apocalyptic number.

20344102220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20344102220 is an abundant number, since it is smaller than the sum of its proper divisors (25664868004).

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

20344102220 is a wasteful number, since it uses less digits than its factorization.

20344102220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78246569 (or 78246567 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 20344102220 its reverse (2220144302), we get a palindrome (22564246522).

The spelling of 20344102220 in words is "twenty billion, three hundred forty-four million, one hundred two thousand, two hundred twenty".