161284 has 12 divisors (see below), whose sum is σ = 287308. Its totient is φ = 79200.

The previous prime is 161281. The next prime is 161303. The reversal of 161284 is 482161.

It can be written as a sum of positive squares in 2 ways, for example, as 57600 + 103684 = 240^2 + 322^2 .

It is a hoax number, since the sum of its digits (22) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (161281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87 + ... + 574.

2¹⁶¹²⁸⁴ is an apocalyptic number.

It is an amenable number.

161284 is a deficient number, since it is larger than the sum of its proper divisors (126024).

161284 is a wasteful number, since it uses less digits than its factorization.

161284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 726 (or 724 counting only the distinct ones).

The product of its digits is 384, while the sum is 22.

The square root of 161284 is about 401.6017928247. The cubic root of 161284 is about 54.4331869300.

The spelling of 161284 in words is "one hundred sixty-one thousand, two hundred eighty-four".