8428120 has 32 divisors (see below), whose sum is σ = 19789920. Its totient is φ = 3224320.

The previous prime is 8428099. The next prime is 8428139. The reversal of 8428120 is 218248.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3661 + ... + 5500.

It is an arithmetic number, because the mean of its divisors is an integer number (618435).

Almost surely, 2^8428120 is an apocalyptic number.

It is an amenable number.

8428120 is an abundant number, since it is smaller than the sum of its proper divisors (11361800).

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

8428120 is a wasteful number, since it uses less digits than its factorization.

8428120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9195 (or 9191 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 25.

The square root of 8428120 is about 2903.1224569418. The cubic root of 8428120 is about 203.5058525685.

The spelling of 8428120 in words is "eight million, four hundred twenty-eight thousand, one hundred twenty".