20200000188 has 12 divisors (see below), whose sum is σ = 47133333800. Its totient is φ = 6733333392.

The previous prime is 20200000147. The next prime is 20200000189. The reversal of 20200000188 is 88100000202.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20200000189) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 841666663 + ... + 841666686.

Almost surely, 2^20200000188 is an apocalyptic number.

It is an amenable number.

20200000188 is an abundant number, since it is smaller than the sum of its proper divisors (26933333612).

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

20200000188 is a wasteful number, since it uses less digits than its factorization.

20200000188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1683333356 (or 1683333354 counting only the distinct ones).

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

The spelling of 20200000188 in words is "twenty billion, two hundred million, one hundred eighty-eight", and thus it is an aban number.