20426104320 has 160 divisors (see below), whose sum is σ = 65486665728. Its totient is φ = 5431369728.

The previous prime is 20426104313. The next prime is 20426104351. The reversal of 20426104320 is 2340162402.

It is a tau number, because it is divible by the number of its divisors (160).

It is a Harshad number since it is a multiple of its sum of digits (24).

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, 2814937 + ... + 2822183.

Almost surely, 2^20426104320 is an apocalyptic number.

20426104320 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 20426104320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32743332864).

20426104320 is an abundant number, since it is smaller than the sum of its proper divisors (45060561408).

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

20426104320 is an equidigital number, since it uses as much as digits as its factorization.

20426104320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7640 (or 7624 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 20426104320 its reverse (2340162402), we get a palindrome (22766266722).

The spelling of 20426104320 in words is "twenty billion, four hundred twenty-six million, one hundred four thousand, three hundred twenty".