20342342220 has 96 divisors (see below), whose sum is σ = 57956290560. Its totient is φ = 5329800960.

The previous prime is 20342342213. The next prime is 20342342297. The reversal of 20342342220 is 2224324302.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4034461 + ... + 4039499.

It is an arithmetic number, because the mean of its divisors is an integer number (603711360).

Almost surely, 2^20342342220 is an apocalyptic number.

20342342220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20342342220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28978145280).

20342342220 is an abundant number, since it is smaller than the sum of its proper divisors (37613948340).

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

20342342220 is a wasteful number, since it uses less digits than its factorization.

20342342220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6215 (or 6213 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 24.

Adding to 20342342220 its reverse (2224324302), we get a palindrome (22566666522).

The spelling of 20342342220 in words is "twenty billion, three hundred forty-two million, three hundred forty-two thousand, two hundred twenty".