281997796 has 12 divisors (see below), whose sum is σ = 494623360. Its totient is φ = 140676840.

The previous prime is 281997743. The next prime is 281997797. The reversal of 281997796 is 697799182.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 281997796.

It is not an unprimeable number, because it can be changed into a prime (281997797) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78540 + ... + 82051.

Almost surely, 2^281997796 is an apocalyptic number.

It is an amenable number.

281997796 is a deficient number, since it is larger than the sum of its proper divisors (212625564).

281997796 is a wasteful number, since it uses less digits than its factorization.

281997796 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161034 (or 161032 counting only the distinct ones).

The product of its digits is 3429216, while the sum is 58.

The square root of 281997796 is about 16792.7900004734. The cubic root of 281997796 is about 655.7655102071.

The spelling of 281997796 in words is "two hundred eighty-one million, nine hundred ninety-seven thousand, seven hundred ninety-six".