20688852 has 24 divisors (see below), whose sum is σ = 48412000. Its totient is φ = 6876576.

The previous prime is 20688827. The next prime is 20688869. The reversal of 20688852 is 25888602.

It is a self number, because there is not a number n which added to its sum of digits gives 20688852.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2274 + ... + 6822.

Almost surely, 2^20688852 is an apocalyptic number.

It is a pronic number, being equal to 4548×4549.

It is an amenable number.

20688852 is an abundant number, since it is smaller than the sum of its proper divisors (27723148).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20688852 is a wasteful number, since it uses less digits than its factorization.

20688852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4935 (or 4933 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 39.

The square root of 20688852 is about 4548.4999725184. The cubic root of 20688852 is about 274.5230387994.

The spelling of 20688852 in words is "twenty million, six hundred eighty-eight thousand, eight hundred fifty-two".