8478724 has 6 divisors (see below), whose sum is σ = 14837774. Its totient is φ = 4239360.

The previous prime is 8478719. The next prime is 8478727. The reversal of 8478724 is 4278748.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 4981824 + 3496900 = 2232^2 + 1870^2 .

It is not an unprimeable number, because it can be changed into a prime (8478727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1059837 + ... + 1059844.

Almost surely, 2^8478724 is an apocalyptic number.

It is an amenable number.

8478724 is a deficient number, since it is larger than the sum of its proper divisors (6359050).

8478724 is a wasteful number, since it uses less digits than its factorization.

8478724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2119685 (or 2119683 counting only the distinct ones).

The product of its digits is 100352, while the sum is 40.

The square root of 8478724 is about 2911.8248573704. The cubic root of 8478724 is about 203.9123357799.

The spelling of 8478724 in words is "eight million, four hundred seventy-eight thousand, seven hundred twenty-four".