8205920 has 24 divisors (see below), whose sum is σ = 19386864. Its totient is φ = 3282304.

The previous prime is 8205913. The next prime is 8205931. The reversal of 8205920 is 295028.

It is a self number, because there is not a number n which added to its sum of digits gives 8205920.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25484 + ... + 25803.

It is an arithmetic number, because the mean of its divisors is an integer number (807786).

Almost surely, 2^8205920 is an apocalyptic number.

8205920 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8205920 is an abundant number, since it is smaller than the sum of its proper divisors (11180944).

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

8205920 is a wasteful number, since it uses less digits than its factorization.

8205920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51302 (or 51294 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 8205920 is about 2864.5977029943. The cubic root of 8205920 is about 201.7014837168.

The spelling of 8205920 in words is "eight million, two hundred five thousand, nine hundred twenty".