8120920 has 16 divisors (see below), whose sum is σ = 18272160. Its totient is φ = 3248352.

The previous prime is 8120891. The next prime is 8120921. The reversal of 8120920 is 290218.

It is a junction number, because it is equal to n+sod(n) for n = 8120891 and 8120900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8120921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101472 + ... + 101551.

It is an arithmetic number, because the mean of its divisors is an integer number (1142010).

Almost surely, 2^8120920 is an apocalyptic number.

It is an amenable number.

8120920 is an abundant number, since it is smaller than the sum of its proper divisors (10151240).

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

8120920 is a wasteful number, since it uses less digits than its factorization.

8120920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203034 (or 203030 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 8120920 is about 2849.7227935362. The cubic root of 8120920 is about 201.0026319136.

The spelling of 8120920 in words is "eight million, one hundred twenty thousand, nine hundred twenty".