200111128 has 16 divisors (see below), whose sum is σ = 428809680. Its totient is φ = 85761888.

The previous prime is 200111123. The next prime is 200111129. The reversal of 200111128 is 821111002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200111123) 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, 1786651 + ... + 1786762.

It is an arithmetic number, because the mean of its divisors is an integer number (26800605).

Almost surely, 2^200111128 is an apocalyptic number.

200111128 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

200111128 is an abundant number, since it is smaller than the sum of its proper divisors (228698552).

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

200111128 is a wasteful number, since it uses less digits than its factorization.

200111128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3573426 (or 3573422 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

The square root of 200111128 is about 14146.0640462285. The cubic root of 200111128 is about 584.9118410021.

The spelling of 200111128 in words is "two hundred million, one hundred eleven thousand, one hundred twenty-eight".