3428281 has 2 divisors, whose sum is σ = 3428282. Its totient is φ = 3428280.

The previous prime is 3428279. The next prime is 3428287. The reversal of 3428281 is 1828243.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2128681 + 1299600 = 1459^2 + 1140^2 .

It is an emirp because it is prime and its reverse (1828243) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3428281 - 2¹ = 3428279 is a prime.

It is a super-2 number, since 2×3428281² = 23506221229922, which contains 22 as substring.

Together with 3428279, it forms a pair of twin primes.

It is an Ulam number.

3428281 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (3428287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1714140 + 1714141.

It is an arithmetic number, because the mean of its divisors is an integer number (1714141).

Almost surely, 2^3428281 is an apocalyptic number.

It is an amenable number.

3428281 is a deficient number, since it is larger than the sum of its proper divisors (1).

3428281 is an equidigital number, since it uses as much as digits as its factorization.

3428281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3072, while the sum is 28.

The square root of 3428281 is about 1851.5617732066. The cubic root of 3428281 is about 150.7852303969.

The spelling of 3428281 in words is "three million, four hundred twenty-eight thousand, two hundred eighty-one".