20876728 has 16 divisors (see below), whose sum is σ = 39548880. Its totient is φ = 10330368.

The previous prime is 20876699. The next prime is 20876743. The reversal of 20876728 is 82767802.

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, 12676 + ... + 14227.

It is an arithmetic number, because the mean of its divisors is an integer number (2471805).

Almost surely, 2^20876728 is an apocalyptic number.

It is an amenable number.

20876728 is a deficient number, since it is larger than the sum of its proper divisors (18672152).

20876728 is a wasteful number, since it uses less digits than its factorization.

20876728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27006 (or 27002 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 40.

The square root of 20876728 is about 4569.1058206174. The cubic root of 20876728 is about 275.3515196235.

The spelling of 20876728 in words is "twenty million, eight hundred seventy-six thousand, seven hundred twenty-eight".