281602 has 8 divisors (see below), whose sum is σ = 426816. Its totient is φ = 139332.

The previous prime is 281581. The next prime is 281609. The reversal of 281602 is 206182.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 281602.

It is not an unprimeable number, because it can be changed into a prime (281609) by changing a digit.

281602 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 478 + ... + 889.

It is an arithmetic number, because the mean of its divisors is an integer number (53352).

2²⁸¹⁶⁰² is an apocalyptic number.

281602 is a deficient number, since it is larger than the sum of its proper divisors (145214).

281602 is a wasteful number, since it uses less digits than its factorization.

281602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1472.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 281602 is about 530.6618508994. The cubic root of 281602 is about 65.5458568222.

Adding to 281602 its reverse (206182), we get a palindrome (487784).

The spelling of 281602 in words is "two hundred eighty-one thousand, six hundred two".