20052728 has 16 divisors (see below), whose sum is σ = 38076000. Its totient is φ = 9899136.

The previous prime is 20052719. The next prime is 20052751. The reversal of 20052728 is 82725002.

It is a super-2 number, since 2×20052728² = 804223800483968, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20052697 and 20052706.

It is a congruent number.

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, 15233 + ... + 16496.

It is an arithmetic number, because the mean of its divisors is an integer number (2379750).

Almost surely, 2^20052728 is an apocalyptic number.

It is an amenable number.

20052728 is a deficient number, since it is larger than the sum of its proper divisors (18023272).

20052728 is a wasteful number, since it uses less digits than its factorization.

20052728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31814 (or 31810 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 20052728 is about 4478.0272442226. The cubic root of 20052728 is about 271.6800953545.

The spelling of 20052728 in words is "twenty million, fifty-two thousand, seven hundred twenty-eight".