3280821 has 8 divisors (see below), whose sum is σ = 4392864. Its totient is φ = 2178000.

The previous prime is 3280811. The next prime is 3280867. The reversal of 3280821 is 1280823.

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

It is not a de Polignac number, because 3280821 - 2⁶ = 3280757 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3280791 and 3280800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3280801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1426 + ... + 2931.

It is an arithmetic number, because the mean of its divisors is an integer number (549108).

Almost surely, 2^3280821 is an apocalyptic number.

It is an amenable number.

3280821 is a deficient number, since it is larger than the sum of its proper divisors (1112043).

3280821 is a wasteful number, since it uses less digits than its factorization.

3280821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4611.

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 3280821 is about 1811.3036741530. The cubic root of 3280821 is about 148.5915724923.

The spelling of 3280821 in words is "three million, two hundred eighty thousand, eight hundred twenty-one".