20304002 has 16 divisors (see below), whose sum is σ = 31683960. Its totient is φ = 9746688.

The previous prime is 20303993. The next prime is 20304007. The reversal of 20304002 is 20040302.

It can be written as a sum of positive squares in 4 ways, for example, as 20241001 + 63001 = 4499^2 + 251^2 .

It is not an unprimeable number, because it can be changed into a prime (20304007) 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, 10538 + ... + 12314.

Almost surely, 2^20304002 is an apocalyptic number.

20304002 is a deficient number, since it is larger than the sum of its proper divisors (11379958).

20304002 is a wasteful number, since it uses less digits than its factorization.

20304002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2005.

The product of its (nonzero) digits is 48, while the sum is 11.

The square root of 20304002 is about 4505.9962272510. The cubic root of 20304002 is about 272.8101655841.

Adding to 20304002 its reverse (20040302), we get a palindrome (40344304).

The spelling of 20304002 in words is "twenty million, three hundred four thousand, two".