8782281 has 12 divisors (see below), whose sum is σ = 12741300. Its totient is φ = 5829120.

The previous prime is 8782261. The next prime is 8782289. The reversal of 8782281 is 1822878.

It can be written as a sum of positive squares in 2 ways, for example, as 4372281 + 4410000 = 2091^2 + 2100^2 .

It is not a de Polignac number, because 8782281 - 2⁹ = 8781769 is a prime.

It is a super-2 number, since 2×8782281² = 154256919125922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8782289) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 145 + ... + 4193.

It is an arithmetic number, because the mean of its divisors is an integer number (1061775).

Almost surely, 2^8782281 is an apocalyptic number.

It is an amenable number.

8782281 is a deficient number, since it is larger than the sum of its proper divisors (3959019).

8782281 is a wasteful number, since it uses less digits than its factorization.

8782281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4296 (or 4293 counting only the distinct ones).

The product of its digits is 14336, while the sum is 36.

The square root of 8782281 is about 2963.4913531171. The cubic root of 8782281 is about 206.3173620190.

The spelling of 8782281 in words is "eight million, seven hundred eighty-two thousand, two hundred eighty-one".