8724281 has 16 divisors (see below), whose sum is σ = 9642240. Its totient is φ = 7860480.

The previous prime is 8724269. The next prime is 8724283. The reversal of 8724281 is 1824278.

8724281 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 8724281 - 2²² = 4529977 is a prime.

It is a super-2 number, since 2×8724281² = 152226157933922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8724283) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48650 + ... + 48828.

It is an arithmetic number, because the mean of its divisors is an integer number (602640).

Almost surely, 2^8724281 is an apocalyptic number.

It is an amenable number.

8724281 is a deficient number, since it is larger than the sum of its proper divisors (917959).

8724281 is a wasteful number, since it uses less digits than its factorization.

8724281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304.

The product of its digits is 7168, while the sum is 32.

The square root of 8724281 is about 2953.6893878673. The cubic root of 8724281 is about 205.8621709757.

The spelling of 8724281 in words is "eight million, seven hundred twenty-four thousand, two hundred eighty-one".