20022230320 has 80 divisors (see below), whose sum is σ = 48347664480. Its totient is φ = 7704778752.

The previous prime is 20022230311. The next prime is 20022230387. The reversal of 20022230320 is 2303222002.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 20022230294 and 20022230303.

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, 225439 + ... + 301441.

It is an arithmetic number, because the mean of its divisors is an integer number (604345806).

Almost surely, 2^20022230320 is an apocalyptic number.

20022230320 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 20022230320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24173832240).

20022230320 is an abundant number, since it is smaller than the sum of its proper divisors (28325434160).

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

20022230320 is a wasteful number, since it uses less digits than its factorization.

20022230320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76142 (or 76136 counting only the distinct ones).

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

Adding to 20022230320 its reverse (2303222002), we get a palindrome (22325452322).

It can be divided in two parts, 2002 and 2230320, that added together give a palindrome (2232322).

The spelling of 20022230320 in words is "twenty billion, twenty-two million, two hundred thirty thousand, three hundred twenty".