200128597 has 4 divisors (see below), whose sum is σ = 205537516. Its totient is φ = 194719680.

The previous prime is 200128517. The next prime is 200128601. The reversal of 200128597 is 795821002.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 152917956 + 47210641 = 12366^2 + 6871^2 .

It is a cyclic number.

It is not a de Polignac number, because 200128597 - 2¹⁹ = 199604309 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200128517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2704404 + ... + 2704477.

It is an arithmetic number, because the mean of its divisors is an integer number (51384379).

Almost surely, 2^200128597 is an apocalyptic number.

It is an amenable number.

200128597 is a deficient number, since it is larger than the sum of its proper divisors (5408919).

200128597 is an equidigital number, since it uses as much as digits as its factorization.

200128597 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5408918.

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 200128597 is about 14146.6814836555. The cubic root of 200128597 is about 584.9288607580.

Adding to 200128597 its reverse (795821002), we get a palindrome (995949599).

The spelling of 200128597 in words is "two hundred million, one hundred twenty-eight thousand, five hundred ninety-seven".