8051720 has 32 divisors (see below), whose sum is σ = 18304920. Its totient is φ = 3187200.

The previous prime is 8051717. The next prime is 8051731. The reversal of 8051720 is 271508.

It can be written as a sum of positive squares in 4 ways, for example, as 8031556 + 20164 = 2834^2 + 142^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3044 + ... + 5036.

Almost surely, 2^8051720 is an apocalyptic number.

It is an amenable number.

8051720 is an abundant number, since it is smaller than the sum of its proper divisors (10253200).

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

8051720 is a wasteful number, since it uses less digits than its factorization.

8051720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2105 (or 2101 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 23.

The square root of 8051720 is about 2837.5552858050. Note that the first 3 decimals coincide. The cubic root of 8051720 is about 200.4300745166.

The spelling of 8051720 in words is "eight million, fifty-one thousand, seven hundred twenty".