20020188 has 24 divisors (see below), whose sum is σ = 46833808. Its totient is φ = 6656256.

The previous prime is 20020171. The next prime is 20020199. The reversal of 20020188 is 88102002.

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, 3270 + ... + 7122.

Almost surely, 2^20020188 is an apocalyptic number.

It is an amenable number.

20020188 is an abundant number, since it is smaller than the sum of its proper divisors (26813620).

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

20020188 is a wasteful number, since it uses less digits than its factorization.

20020188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4293 (or 4291 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

The square root of 20020188 is about 4474.3924727274. The cubic root of 20020188 is about 271.5330620516.

The spelling of 20020188 in words is "twenty million, twenty thousand, one hundred eighty-eight".