3281390 has 16 divisors (see below), whose sum is σ = 6750432. Its totient is φ = 1125024.

The previous prime is 3281363. The next prime is 3281393. The reversal of 3281390 is 931823.

3281390 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3281393) 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 7 ways as a sum of consecutive naturals, for example, 23369 + ... + 23508.

It is an arithmetic number, because the mean of its divisors is an integer number (421902).

Almost surely, 2^3281390 is an apocalyptic number.

3281390 is an abundant number, since it is smaller than the sum of its proper divisors (3469042).

3281390 is a wasteful number, since it uses less digits than its factorization.

3281390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46891.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 3281390 is about 1811.4607365328. The cubic root of 3281390 is about 148.6001621835.

The spelling of 3281390 in words is "three million, two hundred eighty-one thousand, three hundred ninety".