3528281 has 4 divisors (see below), whose sum is σ = 3714000. Its totient is φ = 3342564.

The previous prime is 3528277. The next prime is 3528289. The reversal of 3528281 is 1828253.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3528281 - 2² = 3528277 is a prime.

It is a super-2 number, since 2×3528281² = 24897533629922, which contains 22 as substring.

It is a d-powerful number, because it can be written as 3⁵ + 5⁹ + 2¹¹ + 8⁶ + 2²⁰ + 8⁶ + 1 .

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3528289) 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 in 3 ways as a sum of consecutive naturals, for example, 92831 + ... + 92868.

It is an arithmetic number, because the mean of its divisors is an integer number (928500).

Almost surely, 2^3528281 is an apocalyptic number.

It is an amenable number.

3528281 is a deficient number, since it is larger than the sum of its proper divisors (185719).

3528281 is a wasteful number, since it uses less digits than its factorization.

3528281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185718.

The product of its digits is 3840, while the sum is 29.

The square root of 3528281 is about 1878.3719014082. The cubic root of 3528281 is about 152.2372938312.

The spelling of 3528281 in words is "three million, five hundred twenty-eight thousand, two hundred eighty-one".