20304402016 has 24 divisors (see below), whose sum is σ = 40061032704. Its totient is φ = 10130171520.

The previous prime is 20304402011. The next prime is 20304402037. The reversal of 20304402016 is 61020440302.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20304402011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 673440 + ... + 702943.

It is an arithmetic number, because the mean of its divisors is an integer number (1669209696).

Almost surely, 2^20304402016 is an apocalyptic number.

It is an amenable number.

20304402016 is a deficient number, since it is larger than the sum of its proper divisors (19756630688).

20304402016 is a wasteful number, since it uses less digits than its factorization.

20304402016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1376854 (or 1376846 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 20304402016 its reverse (61020440302), we get a palindrome (81324842318).

The spelling of 20304402016 in words is "twenty billion, three hundred four million, four hundred two thousand, sixteen".