20404222404 has 96 divisors (see below), whose sum is σ = 49869872640. Its totient is φ = 6484800000.

The previous prime is 20404222403. The next prime is 20404222453. The reversal of 20404222404 is 40422240402.

It is not an unprimeable number, because it can be changed into a prime (20404222403) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26395762 + ... + 26396534.

It is an arithmetic number, because the mean of its divisors is an integer number (519477840).

Almost surely, 2^20404222404 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20404222404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24934936320).

20404222404 is an abundant number, since it is smaller than the sum of its proper divisors (29465650236).

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

20404222404 is a wasteful number, since it uses less digits than its factorization.

20404222404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1661 (or 1659 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 24.

Adding to 20404222404 its reverse (40422240402), we get a palindrome (60826462806).

The spelling of 20404222404 in words is "twenty billion, four hundred four million, two hundred twenty-two thousand, four hundred four".