20304034 has 4 divisors (see below), whose sum is σ = 30456054. Its totient is φ = 10152016.

The previous prime is 20304029. The next prime is 20304049. The reversal of 20304034 is 43040302.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43040302 = 2 ⋅21520151.

It can be written as a sum of positive squares in only one way, i.e., 10909809 + 9394225 = 3303^2 + 3065^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20303999 and 20304017.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5076007 + ... + 5076010.

Almost surely, 2^20304034 is an apocalyptic number.

20304034 is a deficient number, since it is larger than the sum of its proper divisors (10152020).

20304034 is a wasteful number, since it uses less digits than its factorization.

20304034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10152019.

The product of its (nonzero) digits is 288, while the sum is 16.

The square root of 20304034 is about 4505.9997780737. Note that the first 3 decimals coincide. The cubic root of 20304034 is about 272.8103089043.

Adding to 20304034 its reverse (43040302), we get a palindrome (63344336).

The spelling of 20304034 in words is "twenty million, three hundred four thousand, thirty-four".