8524420 has 24 divisors (see below), whose sum is σ = 18106200. Its totient is φ = 3370752.

The previous prime is 8524391. The next prime is 8524423. The reversal of 8524420 is 244258.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 91204 + 8433216 = 302^2 + 2904^2 .

It is not an unprimeable number, because it can be changed into a prime (8524423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 615 + ... + 4174.

It is an arithmetic number, because the mean of its divisors is an integer number (754425).

Almost surely, 2^8524420 is an apocalyptic number.

It is an amenable number.

8524420 is an abundant number, since it is smaller than the sum of its proper divisors (9581780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8524420 is a wasteful number, since it uses less digits than its factorization.

8524420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4887 (or 4885 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 25.

The square root of 8524420 is about 2919.6609392188. The cubic root of 8524420 is about 204.2780074824.

Adding to 8524420 its reverse (244258), we get a palindrome (8768678).

It can be divided in two parts, 85244 and 20, that added together give a square (85264 = 292²).

The spelling of 8524420 in words is "eight million, five hundred twenty-four thousand, four hundred twenty".