20502056 has 32 divisors (see below), whose sum is σ = 39774240. Its totient is φ = 9901248.

The previous prime is 20502049. The next prime is 20502059. The reversal of 20502056 is 65020502.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20502059) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 36530 + ... + 37086.

It is an arithmetic number, because the mean of its divisors is an integer number (1242945).

Almost surely, 2^20502056 is an apocalyptic number.

It is an amenable number.

20502056 is a deficient number, since it is larger than the sum of its proper divisors (19272184).

20502056 is a wasteful number, since it uses less digits than its factorization.

20502056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 713 (or 709 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 20502056 is about 4527.9196105938. The cubic root of 20502056 is about 273.6943329745.

Adding to 20502056 its reverse (65020502), we get a palindrome (85522558).

The spelling of 20502056 in words is "twenty million, five hundred two thousand, fifty-six".