200281128 has 64 divisors (see below), whose sum is σ = 529416000. Its totient is φ = 62963712.

The previous prime is 200281099. The next prime is 200281129. The reversal of 200281128 is 821182002.

It is a super-2 number, since 2×200281128² = 80225060465904768, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 200281098 and 200281107.

It is not an unprimeable number, because it can be changed into a prime (200281129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 116338 + ... + 118046.

It is an arithmetic number, because the mean of its divisors is an integer number (8272125).

Almost surely, 2^200281128 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 200281128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (264708000).

200281128 is an abundant number, since it is smaller than the sum of its proper divisors (329134872).

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

200281128 is a wasteful number, since it uses less digits than its factorization.

200281128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1994 (or 1990 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 24.

The square root of 200281128 is about 14152.0715091466. The cubic root of 200281128 is about 585.0774271102.

The spelling of 200281128 in words is "two hundred million, two hundred eighty-one thousand, one hundred twenty-eight".