20302211028 has 72 divisors (see below), whose sum is σ = 52102632960. Its totient is φ = 6148313600.

The previous prime is 20302211009. The next prime is 20302211029. The reversal of 20302211028 is 82011220302.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20302210995 and 20302211013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20302211029) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3018253 + ... + 3024971.

It is an arithmetic number, because the mean of its divisors is an integer number (723647680).

Almost surely, 2^20302211028 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 20302211028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26051316480).

20302211028 is an abundant number, since it is smaller than the sum of its proper divisors (31800421932).

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

20302211028 is a wasteful number, since it uses less digits than its factorization.

20302211028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8829 (or 8816 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The spelling of 20302211028 in words is "twenty billion, three hundred two million, two hundred eleven thousand, twenty-eight".