20402301444 has 96 divisors (see below), whose sum is σ = 56328894720. Its totient is φ = 5623554048.

The previous prime is 20402301419. The next prime is 20402301449. The reversal of 20402301444 is 44410320402.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20402301449) 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, 3780412 + ... + 3785804.

It is an arithmetic number, because the mean of its divisors is an integer number (586759320).

Almost surely, 2^20402301444 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 20402301444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28164447360).

20402301444 is an abundant number, since it is smaller than the sum of its proper divisors (35926593276).

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

20402301444 is a wasteful number, since it uses less digits than its factorization.

20402301444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6989 (or 6987 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 20402301444 its reverse (44410320402), we get a palindrome (64812621846).

The spelling of 20402301444 in words is "twenty billion, four hundred two million, three hundred one thousand, four hundred forty-four".