20020002404 has 6 divisors (see below), whose sum is σ = 35035004214. Its totient is φ = 10010001200.

The previous prime is 20020002389. The next prime is 20020002413. The reversal of 20020002404 is 40420002002.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 16447549504 + 3572452900 = 128248^2 + 59770^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2502500297 + ... + 2502500304.

It is an arithmetic number, because the mean of its divisors is an integer number (5839167369).

Almost surely, 2^20020002404 is an apocalyptic number.

It is an amenable number.

20020002404 is a deficient number, since it is larger than the sum of its proper divisors (15015001810).

20020002404 is a wasteful number, since it uses less digits than its factorization.

20020002404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5005000605 (or 5005000603 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 14.

Adding to 20020002404 its reverse (40420002002), we get a palindrome (60440004406).

The spelling of 20020002404 in words is "twenty billion, twenty million, two thousand, four hundred four".