8275720 has 32 divisors (see below), whose sum is σ = 18708120. Its totient is φ = 3294720.

The previous prime is 8275717. The next prime is 8275723. The reversal of 8275720 is 275728.

It is an interprime number because it is at equal distance from previous prime (8275717) and next prime (8275723).

It can be written as a sum of positive squares in 4 ways, for example, as 5171076 + 3104644 = 2274^2 + 1762^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (8275723) by changing a digit.

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, 12190 + ... + 12850.

Almost surely, 2^8275720 is an apocalyptic number.

It is an amenable number.

8275720 is an abundant number, since it is smaller than the sum of its proper divisors (10432400).

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

8275720 is a wasteful number, since it uses less digits than its factorization.

8275720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 985 (or 981 counting only the distinct ones).

The product of its (nonzero) digits is 7840, while the sum is 31.

The square root of 8275720 is about 2876.7551164463. The cubic root of 8275720 is about 202.2717643961.

The spelling of 8275720 in words is "eight million, two hundred seventy-five thousand, seven hundred twenty".