201284 has 6 divisors (see below), whose sum is σ = 352254. Its totient is φ = 100640.

The previous prime is 201281. The next prime is 201287. The reversal of 201284 is 482102.

It is an interprime number because it is at equal distance from previous prime (201281) and next prime (201287).

It can be written as a sum of positive squares in only one way, i.e., 184900 + 16384 = 430^2 + 128^2 .

It is not an unprimeable number, because it can be changed into a prime (201281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25157 + ... + 25164.

It is an arithmetic number, because the mean of its divisors is an integer number (58709).

2²⁰¹²⁸⁴ is an apocalyptic number.

It is an amenable number.

201284 is a deficient number, since it is larger than the sum of its proper divisors (150970).

201284 is a wasteful number, since it uses less digits than its factorization.

201284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50325 (or 50323 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 201284 is about 448.6468544412. The cubic root of 201284 is about 58.6052358580.

Adding to 201284 its reverse (482102), we get a palindrome (683386).

The spelling of 201284 in words is "two hundred one thousand, two hundred eighty-four".