20045768 has 16 divisors (see below), whose sum is σ = 37638000. Its totient is φ = 10008976.

The previous prime is 20045717. The next prime is 20045777. The reversal of 20045768 is 86754002.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6923 + ... + 9381.

It is an arithmetic number, because the mean of its divisors is an integer number (2352375).

Almost surely, 2^20045768 is an apocalyptic number.

It is an amenable number.

20045768 is a deficient number, since it is larger than the sum of its proper divisors (17592232).

20045768 is a wasteful number, since it uses less digits than its factorization.

20045768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3484 (or 3480 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 20045768 is about 4477.2500488581. The cubic root of 20045768 is about 271.6486596936.

The spelling of 20045768 in words is "twenty million, forty-five thousand, seven hundred sixty-eight".