20030056 has 24 divisors (see below), whose sum is σ = 39268530. Its totient is φ = 9577568.

The previous prime is 20030053. The next prime is 20030057. The reversal of 20030056 is 65003002.

It can be written as a sum of positive squares in only one way, i.e., 19096900 + 933156 = 4370^2 + 966^2 .

It is not an unprimeable number, because it can be changed into a prime (20030053) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1866 + ... + 6598.

Almost surely, 2^20030056 is an apocalyptic number.

It is an amenable number.

20030056 is a deficient number, since it is larger than the sum of its proper divisors (19238474).

20030056 is a wasteful number, since it uses less digits than its factorization.

20030056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4785 (or 4758 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 16.

The square root of 20030056 is about 4475.4950564155. The cubic root of 20030056 is about 271.5776678288.

Adding to 20030056 its reverse (65003002), we get a palindrome (85033058).

The spelling of 20030056 in words is "twenty million, thirty thousand, fifty-six".