20304427056 has 40 divisors (see below), whose sum is σ = 53117076480. Its totient is φ = 6682468416.

The previous prime is 20304427049. The next prime is 20304427069. The reversal of 20304427056 is 65072440302.

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 in 7 ways as a sum of consecutive naturals, for example, 2673480 + ... + 2681063.

It is an arithmetic number, because the mean of its divisors is an integer number (1327926912).

Almost surely, 2^20304427056 is an apocalyptic number.

It is an amenable number.

20304427056 is an abundant number, since it is smaller than the sum of its proper divisors (32812649424).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20304427056 is a wasteful number, since it uses less digits than its factorization.

20304427056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5354633 (or 5354627 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 33.

Adding to 20304427056 its reverse (65072440302), we get a palindrome (85376867358).

The spelling of 20304427056 in words is "twenty billion, three hundred four million, four hundred twenty-seven thousand, fifty-six".