8285780 has 24 divisors (see below), whose sum is σ = 17872008. Its totient is φ = 3224448.

The previous prime is 8285723. The next prime is 8285789. The reversal of 8285780 is 875828.

It can be written as a sum of positive squares in 4 ways, for example, as 1295044 + 6990736 = 1138^2 + 2644^2 .

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8285789) 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, 4859 + ... + 6338.

It is an arithmetic number, because the mean of its divisors is an integer number (744667).

Almost surely, 2^8285780 is an apocalyptic number.

It is an amenable number.

8285780 is an abundant number, since it is smaller than the sum of its proper divisors (9586228).

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

8285780 is a wasteful number, since it uses less digits than its factorization.

8285780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11243 (or 11241 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 38.

The square root of 8285780 is about 2878.5030832014. The cubic root of 8285780 is about 202.3536920101.

The spelling of 8285780 in words is "eight million, two hundred eighty-five thousand, seven hundred eighty".