200717428 has 12 divisors (see below), whose sum is σ = 355202820. Its totient is φ = 99230912.

The previous prime is 200717423. The next prime is 200717431. The reversal of 200717428 is 824717002.

It can be written as a sum of positive squares in 2 ways, for example, as 28005264 + 172712164 = 5292^2 + 13142^2 .

It is a zygodrome in base 3.

It is a self number, because there is not a number n which added to its sum of digits gives 200717428.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200717423) 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, 281551 + ... + 282262.

It is an arithmetic number, because the mean of its divisors is an integer number (29600235).

Almost surely, 2^200717428 is an apocalyptic number.

It is an amenable number.

200717428 is a deficient number, since it is larger than the sum of its proper divisors (154485392).

200717428 is a wasteful number, since it uses less digits than its factorization.

200717428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 563906 (or 563904 counting only the distinct ones).

The product of its (nonzero) digits is 6272, while the sum is 31.

The square root of 200717428 is about 14167.4778277575. The cubic root of 200717428 is about 585.5019705927.

The spelling of 200717428 in words is "two hundred million, seven hundred seventeen thousand, four hundred twenty-eight".