282220840 has 32 divisors (see below), whose sum is σ = 692724960. Its totient is φ = 102625600.

The previous prime is 282220801. The next prime is 282220843. The reversal of 282220840 is 48022282.

It is a junction number, because it is equal to n+sod(n) for n = 282220799 and 282220808.

It is not an unprimeable number, because it can be changed into a prime (282220843) 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 7 ways as a sum of consecutive naturals, for example, 320266 + ... + 321145.

It is an arithmetic number, because the mean of its divisors is an integer number (21647655).

Almost surely, 2^282220840 is an apocalyptic number.

282220840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

282220840 is an abundant number, since it is smaller than the sum of its proper divisors (410504120).

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

282220840 is a wasteful number, since it uses less digits than its factorization.

282220840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 641433 (or 641429 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 28.

The square root of 282220840 is about 16799.4297522267. The cubic root of 282220840 is about 655.9383555499.

It can be divided in two parts, 282 and 220840, that added together give a palindrome (221122).

The spelling of 282220840 in words is "two hundred eighty-two million, two hundred twenty thousand, eight hundred forty".