281960085 has 64 divisors (see below), whose sum is σ = 505774080. Its totient is φ = 132986880.

The previous prime is 281960051. The next prime is 281960089. The reversal of 281960085 is 580069182.

It is not a de Polignac number, because 281960085 - 2¹¹ = 281958037 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (281960089) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1264284 + ... + 1264506.

It is an arithmetic number, because the mean of its divisors is an integer number (7902720).

Almost surely, 2^281960085 is an apocalyptic number.

It is an amenable number.

281960085 is a deficient number, since it is larger than the sum of its proper divisors (223813995).

281960085 is a wasteful number, since it uses less digits than its factorization.

281960085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418.

The product of its (nonzero) digits is 34560, while the sum is 39.

The square root of 281960085 is about 16791.6671298594. The cubic root of 281960085 is about 655.7362775016.

The spelling of 281960085 in words is "two hundred eighty-one million, nine hundred sixty thousand, eighty-five".