8518428 has 72 divisors (see below), whose sum is σ = 23587200. Its totient is φ = 2580480.

The previous prime is 8518427. The next prime is 8518439. The reversal of 8518428 is 8248158.

8518428 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 8518392 and 8518401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8518427) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18748 + ... + 19196.

It is an arithmetic number, because the mean of its divisors is an integer number (327600).

Almost surely, 2^8518428 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8518428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11793600).

8518428 is an abundant number, since it is smaller than the sum of its proper divisors (15068772).

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

8518428 is a wasteful number, since it uses less digits than its factorization.

8518428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507 (or 502 counting only the distinct ones).

The product of its digits is 20480, while the sum is 36.

The square root of 8518428 is about 2918.6346122802. The cubic root of 8518428 is about 204.2301324468.

Subtracting from 8518428 its product of digits (20480), we obtain a palindrome (8497948).

The spelling of 8518428 in words is "eight million, five hundred eighteen thousand, four hundred twenty-eight".