3081280 has 28 divisors (see below), whose sum is σ = 7338060. Its totient is φ = 1232384.

The previous prime is 3081271. The next prime is 3081311. The reversal of 3081280 is 821803.

It can be written as a sum of positive squares in 2 ways, for example, as 2334784 + 746496 = 1528^2 + 864^2 .

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 4495 + ... + 5134.

Almost surely, 2^3081280 is an apocalyptic number.

It is an amenable number.

3081280 is an abundant number, since it is smaller than the sum of its proper divisors (4256780).

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

3081280 is an equidigital number, since it uses as much as digits as its factorization.

3081280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9646 (or 9636 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 3081280 is about 1755.3575134428. The cubic root of 3081280 is about 145.5158794366.

The spelling of 3081280 in words is "three million, eighty-one thousand, two hundred eighty".