129284 has 6 divisors (see below), whose sum is σ = 226254. Its totient is φ = 64640.

The previous prime is 129281. The next prime is 129287. The reversal of 129284 is 482921.

It is an interprime number because it is at equal distance from previous prime (129281) and next prime (129287).

It can be written as a sum of positive squares in only one way, i.e., 103684 + 25600 = 322^2 + 160^2 .

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (129281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16157 + ... + 16164.

It is an arithmetic number, because the mean of its divisors is an integer number (37709).

2¹²⁹²⁸⁴ is an apocalyptic number.

It is an amenable number.

129284 is a deficient number, since it is larger than the sum of its proper divisors (96970).

129284 is a wasteful number, since it uses less digits than its factorization.

129284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32325 (or 32323 counting only the distinct ones).

The product of its digits is 1152, while the sum is 26.

The square root of 129284 is about 359.5608432519. The cubic root of 129284 is about 50.5647960854.

The spelling of 129284 in words is "one hundred twenty-nine thousand, two hundred eighty-four".