8135720 has 16 divisors (see below), whose sum is σ = 18305460. Its totient is φ = 3254272.

The previous prime is 8135713. The next prime is 8135759. The reversal of 8135720 is 275318.

It can be written as a sum of positive squares in 2 ways, for example, as 7828804 + 306916 = 2798^2 + 554^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 8135720.

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, 101657 + ... + 101736.

Almost surely, 2^8135720 is an apocalyptic number.

It is an amenable number.

8135720 is an abundant number, since it is smaller than the sum of its proper divisors (10169740).

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

8135720 is a wasteful number, since it uses less digits than its factorization.

8135720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203404 (or 203400 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 8135720 is about 2852.3183553033. The cubic root of 8135720 is about 201.1246638021.

The spelling of 8135720 in words is "eight million, one hundred thirty-five thousand, seven hundred twenty".