8418281 has 6 divisors (see below), whose sum is σ = 8942910. Its totient is φ = 7922816.

The previous prime is 8418271. The next prime is 8418283. The reversal of 8418281 is 1828148.

8418281 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 2371600 + 6046681 = 1540^2 + 2459^2 .

It is not a de Polignac number, because 8418281 - 2²² = 4223977 is a prime.

It is a super-2 number, since 2×8418281² = 141734909989922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8418283) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 14276 + ... + 14853.

It is an arithmetic number, because the mean of its divisors is an integer number (1490485).

Almost surely, 2^8418281 is an apocalyptic number.

It is an amenable number.

8418281 is a deficient number, since it is larger than the sum of its proper divisors (524629).

8418281 is a wasteful number, since it uses less digits than its factorization.

8418281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29163 (or 29146 counting only the distinct ones).

The product of its digits is 4096, while the sum is 32.

The square root of 8418281 is about 2901.4274073290. The cubic root of 8418281 is about 203.4266307195.

It can be divided in two parts, 841 and 8281, that multiplied together give a square (6964321 = 2639²).

The spelling of 8418281 in words is "eight million, four hundred eighteen thousand, two hundred eighty-one".