281829 has 8 divisors (see below), whose sum is σ = 386080. Its totient is φ = 182736.

The previous prime is 281807. The next prime is 281833. The reversal of 281829 is 928182.

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

It is not a de Polignac number, because 281829 - 2⁵ = 281797 is a prime.

It is a Duffinian number.

281829 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 281796 and 281805.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 281829.

It is not an unprimeable number, because it can be changed into a prime (281839) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1159 + ... + 1380.

It is an arithmetic number, because the mean of its divisors is an integer number (48260).

2²⁸¹⁸²⁹ is an apocalyptic number.

It is an amenable number.

281829 is a deficient number, since it is larger than the sum of its proper divisors (104251).

281829 is a wasteful number, since it uses less digits than its factorization.

281829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2579.

The product of its digits is 2304, while the sum is 30.

The square root of 281829 is about 530.8756916643. The cubic root of 281829 is about 65.5634643123.

The spelling of 281829 in words is "two hundred eighty-one thousand, eight hundred twenty-nine".