8240920 has 32 divisors (see below), whose sum is σ = 19634400. Its totient is φ = 3102208.

The previous prime is 8240909. The next prime is 8240929. The reversal of 8240920 is 290428.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8240929) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5380 + ... + 6739.

It is an arithmetic number, because the mean of its divisors is an integer number (613575).

Almost surely, 2^8240920 is an apocalyptic number.

It is an amenable number.

8240920 is an abundant number, since it is smaller than the sum of its proper divisors (11393480).

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

8240920 is a wasteful number, since it uses less digits than its factorization.

8240920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12147 (or 12143 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 8240920 is about 2870.7002630020. The cubic root of 8240920 is about 201.9878435974.

The spelling of 8240920 in words is "eight million, two hundred forty thousand, nine hundred twenty".