3280440 has 32 divisors (see below), whose sum is σ = 9841680. Its totient is φ = 874752.

The previous prime is 3280423. The next prime is 3280441. The reversal of 3280440 is 440823.

It is a happy number.

It is a super-2 number, since 2×3280440² = 21522573187200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3280441) 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, 13549 + ... + 13788.

Almost surely, 2^3280440 is an apocalyptic number.

3280440 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3280440 is an abundant number, since it is smaller than the sum of its proper divisors (6561240).

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

3280440 is a wasteful number, since it uses less digits than its factorization.

3280440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27351 (or 27347 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 3280440 is about 1811.1984982326. The cubic root of 3280440 is about 148.5858203162.

The spelling of 3280440 in words is "three million, two hundred eighty thousand, four hundred forty".