3280509 has 12 divisors (see below), whose sum is σ = 4902300. Its totient is φ = 2111424.

The previous prime is 3280499. The next prime is 3280517. The reversal of 3280509 is 9050823.

It can be written as a sum of positive squares in 2 ways, for example, as 2722500 + 558009 = 1650^2 + 747^2 .

It is not a de Polignac number, because 3280509 - 2⁴ = 3280493 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3280549) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6024 + ... + 6545.

It is an arithmetic number, because the mean of its divisors is an integer number (408525).

Almost surely, 2^3280509 is an apocalyptic number.

It is an amenable number.

3280509 is a deficient number, since it is larger than the sum of its proper divisors (1621791).

3280509 is a wasteful number, since it uses less digits than its factorization.

3280509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12604 (or 12601 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 3280509 is about 1811.2175462931. The cubic root of 3280509 is about 148.5868620819.

The spelling of 3280509 in words is "three million, two hundred eighty thousand, five hundred nine".