3280745 has 16 divisors (see below), whose sum is σ = 4490640. Its totient is φ = 2279424.

The previous prime is 3280703. The next prime is 3280747. The reversal of 3280745 is 5470823.

It is a happy number.

3280745 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 678976 + 2601769 = 824^2 + 1613^2 .

It is a cyclic number.

It is not a de Polignac number, because 3280745 - 2⁶ = 3280681 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3280747) 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 15 ways as a sum of consecutive naturals, for example, 380 + ... + 2589.

It is an arithmetic number, because the mean of its divisors is an integer number (280665).

Almost surely, 2^3280745 is an apocalyptic number.

It is an amenable number.

3280745 is a deficient number, since it is larger than the sum of its proper divisors (1209895).

3280745 is a wasteful number, since it uses less digits than its factorization.

3280745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3004.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 3280745 is about 1811.2826946670. The cubic root of 3280745 is about 148.5904251122.

The spelling of 3280745 in words is "three million, two hundred eighty thousand, seven hundred forty-five".