20480056 has 16 divisors (see below), whose sum is σ = 38449800. Its totient is φ = 10226784.

The previous prime is 20480041. The next prime is 20480059. The reversal of 20480056 is 65008402.

It is a self number, because there is not a number n which added to its sum of digits gives 20480056.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20480059) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8791 + ... + 10873.

Almost surely, 2^20480056 is an apocalyptic number.

It is an amenable number.

20480056 is a deficient number, since it is larger than the sum of its proper divisors (17969744).

20480056 is a wasteful number, since it uses less digits than its factorization.

20480056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3318 (or 3314 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 20480056 is about 4525.4895867740. The cubic root of 20480056 is about 273.5964008395.

Adding to 20480056 its reverse (65008402), we get a palindrome (85488458).

The spelling of 20480056 in words is "twenty million, four hundred eighty thousand, fifty-six".