281116416 has 72 divisors (see below), whose sum is σ = 855078784. Its totient is φ = 80317440.

The previous prime is 281116351. The next prime is 281116421. The reversal of 281116416 is 614611182.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

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, 20770 + ... + 31521.

Almost surely, 2^281116416 is an apocalyptic number.

It is an amenable number.

281116416 is an abundant number, since it is smaller than the sum of its proper divisors (573962368).

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

281116416 is an equidigital number, since it uses as much as digits as its factorization.

281116416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52317 (or 52303 counting only the distinct ones).

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

The square root of 281116416 is about 16766.5266528282. The cubic root of 281116416 is about 655.0816020160.

Adding to 281116416 its reverse (614611182), we get a palindrome (895727598).

The spelling of 281116416 in words is "two hundred eighty-one million, one hundred sixteen thousand, four hundred sixteen".