20000188 has 12 divisors (see below), whose sum is σ = 37692760. Its totient is φ = 9230832.

The previous prime is 20000171. The next prime is 20000213. The reversal of 20000188 is 88100002.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 192258 + ... + 192361.

Almost surely, 2^20000188 is an apocalyptic number.

It is an amenable number.

20000188 is a deficient number, since it is larger than the sum of its proper divisors (17692572).

20000188 is a wasteful number, since it uses less digits than its factorization.

20000188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 384636 (or 384634 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

The square root of 20000188 is about 4472.1569739892. The cubic root of 20000188 is about 271.4426121743.

The spelling of 20000188 in words is "twenty million, one hundred eighty-eight", and thus it is an aban number.