3280397 has 4 divisors (see below), whose sum is σ = 3334236. Its totient is φ = 3226560.

The previous prime is 3280391. The next prime is 3280423. The reversal of 3280397 is 7930823.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 90601 + 3189796 = 301^2 + 1786^2 .

It is a cyclic number.

It is not a de Polignac number, because 3280397 - 2²⁰ = 2231821 is a prime.

It is a super-2 number, since 2×3280397² = 21522008955218, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3280391) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26828 + ... + 26949.

It is an arithmetic number, because the mean of its divisors is an integer number (833559).

Almost surely, 2^3280397 is an apocalyptic number.

It is an amenable number.

3280397 is a deficient number, since it is larger than the sum of its proper divisors (53839).

3280397 is an equidigital number, since it uses as much as digits as its factorization.

3280397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53838.

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 3280397 is about 1811.1866276008. The cubic root of 3280397 is about 148.5851710925.

The spelling of 3280397 in words is "three million, two hundred eighty thousand, three hundred ninety-seven".