3528381 has 4 divisors (see below), whose sum is σ = 4704512. Its totient is φ = 2352252.

The previous prime is 3528379. The next prime is 3528397. The reversal of 3528381 is 1838253.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1838253 = 3 ⋅612751.

It is not a de Polignac number, because 3528381 - 2¹ = 3528379 is a prime.

It is a super-2 number, since 2×3528381² = 24898944962322, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

3528381 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3528311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 588061 + ... + 588066.

It is an arithmetic number, because the mean of its divisors is an integer number (1176128).

Almost surely, 2^3528381 is an apocalyptic number.

It is an amenable number.

3528381 is a deficient number, since it is larger than the sum of its proper divisors (1176131).

3528381 is a wasteful number, since it uses less digits than its factorization.

3528381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1176130.

The product of its digits is 5760, while the sum is 30.

The square root of 3528381 is about 1878.3985200165. The cubic root of 3528381 is about 152.2387320750.

The spelling of 3528381 in words is "three million, five hundred twenty-eight thousand, three hundred eighty-one".