281632016 has 20 divisors (see below), whose sum is σ = 554912400. Its totient is φ = 138428832.

The previous prime is 281632007. The next prime is 281632051. The reversal of 281632016 is 610236182.

It is a self number, because there is not a number n which added to its sum of digits gives 281632016.

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 3 ways as a sum of consecutive naturals, for example, 148226 + ... + 150113.

It is an arithmetic number, because the mean of its divisors is an integer number (27745620).

Almost surely, 2^281632016 is an apocalyptic number.

It is an amenable number.

281632016 is a deficient number, since it is larger than the sum of its proper divisors (273280384).

281632016 is a wasteful number, since it uses less digits than its factorization.

281632016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298406 (or 298400 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 281632016 is about 16781.8954829304. The cubic root of 281632016 is about 655.4818558704.

Adding to 281632016 its reverse (610236182), we get a palindrome (891868198).

The spelling of 281632016 in words is "two hundred eighty-one million, six hundred thirty-two thousand, sixteen".