282840 has 32 divisors (see below), whose sum is σ = 848880. Its totient is φ = 75392.

The previous prime is 282833. The next prime is 282847. The reversal of 282840 is 48282.

It is an interprime number because it is at equal distance from previous prime (282833) and next prime (282847).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 282840.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (282847) 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 7 ways as a sum of consecutive naturals, for example, 1059 + ... + 1298.

2²⁸²⁸⁴⁰ is an apocalyptic number.

282840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

282840 is an abundant number, since it is smaller than the sum of its proper divisors (566040).

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

282840 is a wasteful number, since it uses less digits than its factorization.

282840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2371 (or 2367 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 24.

The square root of 282840 is about 531.8270395533. The cubic root of 282840 is about 65.6417689573.

The spelling of 282840 in words is "two hundred eighty-two thousand, eight hundred forty".