282870140 has 72 divisors (see below), whose sum is σ = 731702160. Its totient is φ = 91273728.

The previous prime is 282870127. The next prime is 282870149. The reversal of 282870140 is 41078282.

It is a super-2 number, since 2×282870140² = 160031032207239200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 282870097 and 282870106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (282870149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8171 + ... + 25149.

It is an arithmetic number, because the mean of its divisors is an integer number (10162530).

Almost surely, 2^282870140 is an apocalyptic number.

282870140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 282870140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (365851080).

282870140 is an abundant number, since it is smaller than the sum of its proper divisors (448832020).

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

282870140 is a wasteful number, since it uses less digits than its factorization.

282870140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17019 (or 17010 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 32.

The square root of 282870140 is about 16818.7437105154. The cubic root of 282870140 is about 656.4410051423.

The spelling of 282870140 in words is "two hundred eighty-two million, eight hundred seventy thousand, one hundred forty".