281964 has 12 divisors (see below), whose sum is σ = 657944. Its totient is φ = 93984.

The previous prime is 281959. The next prime is 281971. The reversal of 281964 is 469182.

281964 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11737 + ... + 11760.

2²⁸¹⁹⁶⁴ is an apocalyptic number.

It is an amenable number.

281964 is an abundant number, since it is smaller than the sum of its proper divisors (375980).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

281964 is a wasteful number, since it uses less digits than its factorization.

281964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23504 (or 23502 counting only the distinct ones).

The product of its digits is 3456, while the sum is 30.

The square root of 281964 is about 531.0028248512. The cubic root of 281964 is about 65.5739312441.

The spelling of 281964 in words is "two hundred eighty-one thousand, nine hundred sixty-four".