8020840 has 32 divisors (see below), whose sum is σ = 18144000. Its totient is φ = 3191104.

The previous prime is 8020801. The next prime is 8020867. The reversal of 8020840 is 480208.

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, 9141 + ... + 9979.

It is an arithmetic number, because the mean of its divisors is an integer number (567000).

Almost surely, 2^8020840 is an apocalyptic number.

It is an amenable number.

8020840 is an abundant number, since it is smaller than the sum of its proper divisors (10123160).

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

8020840 is a wasteful number, since it uses less digits than its factorization.

8020840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1089 (or 1085 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 22.

The square root of 8020840 is about 2832.1087549739. The cubic root of 8020840 is about 200.1735160840.

The spelling of 8020840 in words is "eight million, twenty thousand, eight hundred forty".