282828281 has 8 divisors (see below), whose sum is σ = 304049280. Its totient is φ = 262240848.

The previous prime is 282828277. The next prime is 282828307. The reversal of 282828281 is 182828282.

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

It is a cyclic number.

It is not a de Polignac number, because 282828281 - 2² = 282828277 is a prime.

It is a super-2 number, since 2×282828281² = 159983673066829922, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (282828181) 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, 157466 + ... + 159251.

It is an arithmetic number, because the mean of its divisors is an integer number (38006160).

Almost surely, 2^282828281 is an apocalyptic number.

It is an amenable number.

282828281 is a deficient number, since it is larger than the sum of its proper divisors (21220999).

282828281 is a wasteful number, since it uses less digits than its factorization.

282828281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316783.

The product of its digits is 65536, while the sum is 41.

The square root of 282828281 is about 16817.4992492939. The cubic root of 282828281 is about 656.4086235937.

Subtracting from 282828281 its reverse (182828282), we obtain a palindrome (99999999).

It can be divided in two parts, 28282 and 8281, that added together give a palindrome (36563).

The spelling of 282828281 in words is "two hundred eighty-two million, eight hundred twenty-eight thousand, two hundred eighty-one".