20440211320 has 64 divisors (see below), whose sum is σ = 48335616000. Its totient is φ = 7764290688.

The previous prime is 20440211303. The next prime is 20440211321. The reversal of 20440211320 is 2311204402.

It is a super-2 number, since 2×20440211320² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20440211321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47961 + ... + 207799.

It is an arithmetic number, because the mean of its divisors is an integer number (755244000).

Almost surely, 2^20440211320 is an apocalyptic number.

20440211320 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 20440211320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24167808000).

20440211320 is an abundant number, since it is smaller than the sum of its proper divisors (27895404680).

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

20440211320 is a wasteful number, since it uses less digits than its factorization.

20440211320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160012 (or 160008 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 20440211320 its reverse (2311204402), we get a palindrome (22751415722).

The spelling of 20440211320 in words is "twenty billion, four hundred forty million, two hundred eleven thousand, three hundred twenty".