20655028 has 24 divisors (see below), whose sum is σ = 37695392. Its totient is φ = 9893664.

The previous prime is 20655023. The next prime is 20655049. The reversal of 20655028 is 82055602.

It is a junction number, because it is equal to n+sod(n) for n = 20654987 and 20655005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20655023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8875 + ... + 10957.

Almost surely, 2^20655028 is an apocalyptic number.

It is an amenable number.

20655028 is a deficient number, since it is larger than the sum of its proper divisors (17040364).

20655028 is a wasteful number, since it uses less digits than its factorization.

20655028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2191 (or 2189 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 20655028 is about 4544.7803027209. The cubic root of 20655028 is about 274.3733521935.

The spelling of 20655028 in words is "twenty million, six hundred fifty-five thousand, twenty-eight".