20045828 has 36 divisors (see below), whose sum is σ = 39102000. Its totient is φ = 8983920.

The previous prime is 20045827. The next prime is 20045833. The reversal of 20045828 is 82854002.

It is a self number, because there is not a number n which added to its sum of digits gives 20045828.

It is not an unprimeable number, because it can be changed into a prime (20045827) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39923 + ... + 40421.

Almost surely, 2^20045828 is an apocalyptic number.

It is an amenable number.

20045828 is a deficient number, since it is larger than the sum of its proper divisors (19056172).

20045828 is a wasteful number, since it uses less digits than its factorization.

20045828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 608 (or 595 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 29.

The square root of 20045828 is about 4477.2567493947. The cubic root of 20045828 is about 271.6489307218.

The spelling of 20045828 in words is "twenty million, forty-five thousand, eight hundred twenty-eight".