20020568 has 8 divisors (see below), whose sum is σ = 37538580. Its totient is φ = 10010280.

The previous prime is 20020541. The next prime is 20020571. The reversal of 20020568 is 86502002.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1251278 + ... + 1251293.

Almost surely, 2^20020568 is an apocalyptic number.

It is an amenable number.

20020568 is a deficient number, since it is larger than the sum of its proper divisors (17518012).

20020568 is a wasteful number, since it uses less digits than its factorization.

20020568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2502577 (or 2502573 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 20020568 is about 4474.4349363914. The cubic root of 20020568 is about 271.5347800160.

The spelling of 20020568 in words is "twenty million, twenty thousand, five hundred sixty-eight".