3678281 has 8 divisors (see below), whose sum is σ = 3823560. Its totient is φ = 3535488.

The previous prime is 3678247. The next prime is 3678287. The reversal of 3678281 is 1828763.

It can be written as a sum of positive squares in 4 ways, for example, as 102400 + 3575881 = 320^2 + 1891^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3678281 - 2⁶ = 3678217 is a prime.

It is a super-2 number, since 2×3678281² = 27059502229922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3678287) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2735 + ... + 3851.

It is an arithmetic number, because the mean of its divisors is an integer number (477945).

Almost surely, 2^3678281 is an apocalyptic number.

It is an amenable number.

3678281 is a deficient number, since it is larger than the sum of its proper divisors (145279).

3678281 is a wasteful number, since it uses less digits than its factorization.

3678281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1243.

The product of its digits is 16128, while the sum is 35.

The square root of 3678281 is about 1917.8845116430. The cubic root of 3678281 is about 154.3648094919.

It can be divided in two parts, 36782 and 81, that added together give a palindrome (36863).

The spelling of 3678281 in words is "three million, six hundred seventy-eight thousand, two hundred eighty-one".