3278345 has 12 divisors (see below), whose sum is σ = 4576644. Its totient is φ = 2247840.

The previous prime is 3278339. The next prime is 3278347. The reversal of 3278345 is 5438723.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 753424 + 2524921 = 868^2 + 1589^2 .

It is not a de Polignac number, because 3278345 - 2⁴ = 3278329 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3278347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6446 + ... + 6935.

It is an arithmetic number, because the mean of its divisors is an integer number (381387).

Almost surely, 2^3278345 is an apocalyptic number.

3278345 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3278345 is a deficient number, since it is larger than the sum of its proper divisors (1298299).

3278345 is a wasteful number, since it uses less digits than its factorization.

3278345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13400 (or 13393 counting only the distinct ones).

The product of its digits is 20160, while the sum is 32.

The square root of 3278345 is about 1810.6200595376. The cubic root of 3278345 is about 148.5541829359.

The spelling of 3278345 in words is "three million, two hundred seventy-eight thousand, three hundred forty-five".