281967 has 16 divisors (see below), whose sum is σ = 445440. Its totient is φ = 155232.

The previous prime is 281959. The next prime is 281971. The reversal of 281967 is 769182.

It is not a de Polignac number, because 281967 - 2³ = 281959 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (281927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 378 + ... + 840.

It is an arithmetic number, because the mean of its divisors is an integer number (27840).

2²⁸¹⁹⁶⁷ is an apocalyptic number.

281967 is a deficient number, since it is larger than the sum of its proper divisors (163473).

281967 is a wasteful number, since it uses less digits than its factorization.

281967 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502.

The product of its digits is 6048, while the sum is 33.

The square root of 281967 is about 531.0056496875. The cubic root of 281967 is about 65.5741638047.

It can be divided in two parts, 28196 and 7, that added together give a triangular number (28203 = T₂₃₇).

The spelling of 281967 in words is "two hundred eighty-one thousand, nine hundred sixty-seven".