20306022126 has 64 divisors (see below), whose sum is σ = 44212912128. Its totient is φ = 6180185088.

The previous prime is 20306022097. The next prime is 20306022161. The reversal of 20306022126 is 62122060302.

It is a junction number, because it is equal to n+sod(n) for n = 20306022096 and 20306022105.

It is a congruent 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, 3493915 + ... + 3499721.

It is an arithmetic number, because the mean of its divisors is an integer number (690826752).

Almost surely, 2^20306022126 is an apocalyptic number.

20306022126 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 20306022126, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22106456064).

20306022126 is an abundant number, since it is smaller than the sum of its proper divisors (23906890002).

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

20306022126 is a wasteful number, since it uses less digits than its factorization.

20306022126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6305.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 20306022126 its reverse (62122060302), we get a palindrome (82428082428).

The spelling of 20306022126 in words is "twenty billion, three hundred six million, twenty-two thousand, one hundred twenty-six".