20304333442 has 16 divisors (see below), whose sum is σ = 31220628120. Its totient is φ = 9900582912.

The previous prime is 20304333433. The next prime is 20304333449. The reversal of 20304333442 is 24433340302.

It can be written as a sum of positive squares in 4 ways, for example, as 15662772801 + 4641560641 = 125151^2 + 68129^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20304333442.

It is not an unprimeable number, because it can be changed into a prime (20304333449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 768303 + ... + 794290.

Almost surely, 2^20304333442 is an apocalyptic number.

20304333442 is a deficient number, since it is larger than the sum of its proper divisors (10916294678).

20304333442 is a wasteful number, since it uses less digits than its factorization.

20304333442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1562757.

The product of its (nonzero) digits is 20736, while the sum is 28.

Adding to 20304333442 its reverse (24433340302), we get a palindrome (44737673744).

The spelling of 20304333442 in words is "twenty billion, three hundred four million, three hundred thirty-three thousand, four hundred forty-two".