3241821 has 16 divisors (see below), whose sum is σ = 4749120. Its totient is φ = 1950720.

The previous prime is 3241817. The next prime is 3241853. The reversal of 3241821 is 1281423.

It is not a de Polignac number, because 3241821 - 2² = 3241817 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3241801) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6115 + ... + 6623.

It is an arithmetic number, because the mean of its divisors is an integer number (296820).

Almost surely, 2^3241821 is an apocalyptic number.

It is an amenable number.

3241821 is a deficient number, since it is larger than the sum of its proper divisors (1507299).

3241821 is a wasteful number, since it uses less digits than its factorization.

3241821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 716.

The product of its digits is 384, while the sum is 21.

The square root of 3241821 is about 1800.5057622790. The cubic root of 3241821 is about 148.0004413184. Note that the first 3 decimals are identical.

It can be divided in two parts, 324 and 1821, that added together give a triangular number (2145 = T₆₅).

The spelling of 3241821 in words is "three million, two hundred forty-one thousand, eight hundred twenty-one".