20404020382 has 4 divisors (see below), whose sum is σ = 30606030576. Its totient is φ = 10202010190.

The previous prime is 20404020359. The next prime is 20404020389. The reversal of 20404020382 is 28302040402.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20404020389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5101005094 + ... + 5101005097.

It is an arithmetic number, because the mean of its divisors is an integer number (7651507644).

Almost surely, 2^20404020382 is an apocalyptic number.

20404020382 is a deficient number, since it is larger than the sum of its proper divisors (10202010194).

20404020382 is a wasteful number, since it uses less digits than its factorization.

20404020382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10202010193.

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 20404020382 its reverse (28302040402), we get a palindrome (48706060784).

It can be divided in two parts, 204040 and 20382, that added together give a palindrome (224422).

The spelling of 20404020382 in words is "twenty billion, four hundred four million, twenty thousand, three hundred eighty-two".